bluuebunny/crossref_metadata_2025 huggingface dataset:
Koreai művészet Magyarországon a 20. század közepén: észak-koreai kulturális kapcsolatok és nemzeti identitás egy tárgycsoport tükrében
Authors: Mecsi Beatrix
Published: January 2024

A budapesti Hopp Ferenc Ázsiai Művészeti Múzeumban található Koguryŏ-kori festmények XX. századi másolatainak kontextusba helyezésekor kirajzolódik az a kép, hogy a másolatok készítésével nemcsak az emlékek bemutatása és megőrzése volt a cél, hanem az újonnan létrejövő észak-koreai állam saját nemzeti művészetének megújítását is látta ezekben a festményekben. Az ősi falképek iránti fokozott figyelem a gyarmatosító japánokkal kezdődött, akik az újonnan tanult tudományos módszereket alkalmazták a régészeti kutatáshoz, feltárták a gyarmatosított területeik rejtett kincseit, és a falfestmények másolatainak elkészítésével bővítették az ismereteiket az újonnan megszerzett területeikről. A japán uralom alóli felszabadulás után az észak-koreaiak az új felfedezéseket új nemzeti identitás kialakítására és a múltjukhoz való kapcsolódásra használták fel, és nemcsak a történelemre összpontosítottak, hanem új művészeti módszereket is kialakítottak (hagyományos tusfestészet nagyszabású újjáélesztése, a közösségi műalkotások), miközben tanulmányozták és lemásolták ezeket. A falképek lemásolásánál nemcsak a tudatosan készített formákat, hanem a sérüléseket is ábrázolták, így a több évtizeden keresztül több művész által különböző időszakokban készített másolatok egymással való összehasonlítása fontos adalékként szolgál a festmények állapotváltozásainak nyomon követésében. A tömegesen gyártott (gyakran nemzetközi felhasználásra készült) festménymásolatok közép- és kelet-európai kiállításokon való szerepeltetése kiemeli ezen festmények propagandacélra készült és a korabeli nemzeti identitást kifejező szándékát.

Az észak-koreai művészeti alkotásokon keresztül képviselt koreai kultúra magyarországi láthatóságát erős és tudatos kultúrpolitika segítette, különösen a koreai háború után, amikor Észak-Korea a koreai művészet közép- és kelet-európai megismertetésére és népszerűsítésére használt kulturális termékeivel adománygyűjtő tevékenységet folytatott az 1950-es években a koreai háború után romjaiból felemelkedő ország helyreállítására. A Kína és a Szovjetunió közötti konfliktust követően 1956 és az 1960-as évek között Észak-Korea és Közép-Kelet-Európa országai között egyre aktívabb diplomáciai kapcsolatoknak és kulturális cseréknek lehetünk tanúi. Észak-Koreából érkező művészek közép- és kelet-európai művészeti múzeumok kiállításain látott, XIX. századi népi és történelmi témájú művészete által inspirálódtak, és a korábban jellemző, politikai színezetű propagandaképek helyett a nemzeti, etnikai és helyi elemeket bemutató művészeti alkotásokat kezdtek készíteni, így az 1950-es évek közepén a politikai töltetű propagandisztikus, antiimperialista tárgyakról (mint például a politikai plakátok) a nemzeti művészetet illusztráló tárgyak felé mozdultak el, bemutatva az Észak-Koreában reprezentatívnak tekintett műtárgyak másolatait.
DEVELOPING A COMPUTER VISION BASED SYSTEM FOR AUTONOMOUS TAXIING OF AIRCRAFT
Authors: Gaikwad Prashant , Mukhopadhyay Abhishek , Muraleedharan Anujith , Mitra Mukund , Biswas Pradipta
Published: January 2024

Authors of this paper propose a computer vision based autonomous system for the taxiing of an aircraft in the real world. The system integrates both lane detection and collision detection and avoidance models. The lane detection component employs a segmentation model consisting of two parallel architectures. An airport dataset is proposed, and the collision detection model is evaluated with it to avoid collision with any ground vehicle. The lane detection model identifies the aircraft’s path and transmits control signals to the steer-control algorithm. The steer-control algorithm, in turn, utilizes a controller to guide the aircraft along the central line with 0.013 cm resolution. To determine the most effective controller, a comparative analysis is conducted, ultimately highlighting the Linear Quadratic Regulator (LQR) as the superior choice, boasting an average deviation of 0.26 cm from the central line. In parallel, the collision detection model is also compared with other state-of-the-art models on the same dataset and proved its superiority. A detailed study is conducted in different lighting conditions to prove the efficacy of the proposed system. It is observed that lane detection and collision avoidance modules achieve true positive rates of 92.59% and 85.19%, respectively.
Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg
Authors: Metcalfe Travis S. , Strassmeier Klaus G. , Ilyin Ilya V. , Buzasi Derek , Kochukhov Oleg , Ayres Thomas R. , Basu Sarbani , Chontos Ashley , Finley Adam J. , See Victor , Stassun Keivan G. , van Saders Jennifer L. , Sepulveda Aldo G. , Ricker George R.
Published: January 2024

The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum. However, the 50 yr time series showing minimal chromospheric variability could also be associated with the onset of weakened magnetic braking (WMB), where sufficiently slow rotation disrupts cycling activity and the production of large-scale magnetic fields by the stellar dynamo, thereby shrinking the Alfvén radius and inhibiting the efficient loss of angular momentum to magnetized stellar winds. In this Letter, we evaluate the magnetic evolutionary state of 51 Peg by estimating its wind braking torque. We use new spectropolarimetric measurements from the Large Binocular Telescope to reconstruct the large-scale magnetic morphology, we reanalyze archival X-ray measurements to estimate the mass-loss rate, and we detect solar-like oscillations in photometry from the Transiting Exoplanet Survey Satellite, yielding precise stellar properties from asteroseismology. Our estimate of the wind braking torque for 51 Peg clearly places it in the WMB regime, driven by changes in the mass-loss rate and the magnetic field strength and morphology that substantially exceed theoretical expectations. Although our revised stellar properties have minimal consequences for the characterization of the exoplanet, they have interesting implications for the current space weather environment of the system.
Assesment of the Development of European Air Forces in the Context of US-China Competition
Authors: Feryna Jan , Kutěj Libor
Published: January 2024

The air force plays an important role in armed conflicts. It was no different in the Odyssey Dawn and Unified Protector operations in Libya in 2011. The European dependence on the US became fully apparent during those operations. After 2011, US attention has been shifted to Asia. This article focuses on the evaluation of the development of European air forces from 2011 to 2021 in the context of the shift of US attention to Asia. The article uses a dataset to compare the number of aircraft in specific categories in 2011 and 2021. The research shows that European states maintain a fleet of around 2,000 fighter jets, while compared to 2011, the number of ISR aircraft decreased from 183 to 122 and the number of air-to-air refuelling aircraft from 70 to 67. In contrast, the number of MALE unmanned vehicles has doubled from 45 to 91. However, in the context of the US shift Asia, those numbers are insufficient, and European states are still dependent on US support.
Strategic Surprise and Implications for State Defense
Authors: Dubec Radek , Janda Roman
Published: January 2024

The article is based on a study carried out as part of the Long-Term Organizational Development Plan project by the Center for Security and Military-Strategic Studies of the University of Defense entitled "Armed Conflict". As part of the study, the issue of strategic surprise was analyzed and assessed, the aim of which was to find causal mechanisms and connections between the security of state defense and the phenomenon of surprise in the conditions of the 21st century. The article deals with the issue of surprise and its impact on state defense security. It describes strategic surprise as a principled aspect with implications and impacts on state defense. It examines the issue of surprise as a principle of military art in the context of contemporary strategic thinking.
Consequences of the Changes in Czechoslovakia in November 1989 for the Teaching of Social Sciences at Military Universities Using the Example of the Military University of the Ground Forces in Vyškov
Authors: Hanzlík František
Published: January 2024

The article deals with the consequences of changes in society and the army after the “Velvet Revolution” in 1989 for teaching social sciences at military schools. The changes are illustrated by the example of the Military University of the Ground Forces in Vyškov, which trained most of the officers for the ground troops. The first part of the article shows the use of social science teaching at military schools to ideologically indoctrinate students in favour of the ruling Communist Party of Czechoslovakia before November 1989. The next part of the article deals with the reflection of changes in society and in the army after the abolition of the article on the leading role of the Communist Party of Czechoslovakia in the Constitution in the system of teaching social sciences, in their content and scope. The content of the article also shows individual milestones in the process of changes in the teaching of social sciences on the way from their use for communist indoctrination to the formation of democratic army officers.
Seven new species of Alternaria (Pleosporales, Pleosporaceae) associated with Chinese fir, based on morphological and molecular evidence
Authors: He Jiao , Li De-Wei , Cui Wen-Li , Huang Lin
Published: January 2024

Chinese fir (Cunninghamia lanceolata) is a special fast-growing commercial tree species in China and has significant ecological and economic value. However, it experienced damage from leaf blight caused by pathogenic fungi of the genus Alternaria. To determine the diversity of Alternaria species associated with leaf blight of Chinese fir in China, infected leaves were collected from five major cultivation provinces (Fujian, Henan, Hunan, Jiangsu and Shandong provinces). A total of 48 fungal strains of Alternaria were obtained. Comparison of morphology and phylogenetic analyses, based on nine loci (ITS, SSU, LSU, GAPDH, RPB2, TEF1, Alt a1, endoPG and OPA10-2) of the representative isolates as well as the pairwise homoplasy index tests, revealed that the fungal strains belonged to seven undescribed taxa of Alternaria, which are described here and named as Alternaria cunninghamiicolasp. nov., A. dongshanqiaoensissp. nov., A. hunanensissp. nov., A. kunyuensissp. nov., А. longqiaoensissp. nov., A. shandongensissp. nov. and A. xinyangensissp. nov. In order to prove Koch’s postulates, pathogenicity tests on detached Chinese fir leaves revealed significant pathogenicity amongst these species, of which A. hunanensis is the most pathogenic to Chinese fir. This study represents the first report of A. cunninghamiicola, A. dongshanqiaoensis, A. hunanensis, A. kunyuensis, A. longqiaoensis, A. shandongensis and A. xinyangensis causing leaf blight on Chinese fir. Knowledge obtained in this study enhanced our understanding of Alternaria species causing leaf blight on Chinese fir and was crucial for the disease management and the further studies in the future.
Limitations of invasive snake control tools in the context of a new invasion on an island with abundant prey
Authors: Siers Shane R. , Nafus Melia G. , Calaor Jeried E. , Volsteadt Rachel M. , Grassi Matthew S. , Volsteadt Megan , Collins Aaron F. , Barnhart Patrick D. , Huse Logan T. , Yackel Adams Amy A. , Vice Diane L.
Published: January 2024

In October 2020, a new population of invasive brown treesnakes (Boiga irregularis) was discovered on the 33-ha Cocos Island, 2.5 km off the south coast of Guam. Cocos Island is a unique conservation resource, providing refuge for many lizards and birds, including endangered species, which were extirpated from mainland Guam by invasive predators including brown treesnakes. We sought to evaluate the usefulness of toxic baiting with acetaminophen-treated carrion baits and cage trapping, common tools for the control of brown treesnakes on mainland Guam, as potential eradication tools on Cocos Island. We evaluated multiple bait types and bait presentations: on the ground, suspended in the canopy emulating aerial bait applications and in four plastic-tube bait station configurations intended to exclude non-target species. We monitored all baits with time-lapse cameras. Despite improved exclusion of non-targets by bait station design, most baits were quickly removed by non-target species, particularly coconut crabs (Birgus latro) and Mariana monitors (Varanus tsukamotoi). Monitoring of 1,250 baits available for 2,427 bait nights resulted in no observations of brown treesnakes taking any bait. Subsequently, we tested two trap types commonly used on Guam and compared trapping success with live versus dead mouse lures. In 10,553 trap nights using live and dead mouse lures, we only captured one brown treesnake, in a trap with a live mouse lure. These baiting and trapping rates are so low as to be ineffectual for all practical purposes. Concurrent visual searching and hand capture of brown treesnakes during initial rapid response efforts demonstrates that these low baiting and trapping success rates are not a result of low snake density. We make a case for our assumption that the ineffectiveness of these tools on Cocos Island is due to the context of extremely high abundance of preferred live prey, primarily large geckos and birds. Our results have profound conservation ramifications, because any future island invasions by brown treesnakes are likely to occur within similarly prey-rich environments where these baiting and trapping methods might be similarly ineffective.
On the complete moment convergence of moving average processes generated by negatively dependent random variables under sub-linear expectations
Authors: Xu Mingzhou
Published: January 2024

The moving average processes $ X_k = \sum_{i = -\infty}^{\infty}a_{i+k}Y_{i} $ are studied, where $ \{Y_i, -\infty < i < \infty\} $ is a double infinite sequence of negatively dependent random variables under sub-linear expectations, and $ \{a_i, -\infty < i < \infty\} $ is an absolutely summable sequence of real numbers. We establish the complete moment convergence of a moving average process under proper conditions, extending the corresponding results in classic probability space to those in sub-linear expectation space.
El cancionero sefardí: estructuras y concordancias (literarias, funcionales y musicales)
Authors: Weich-Shahak Susana
Published: January 2024

El cancionero judeo-español ocupa un lugar preponderante en la vida comunitaria sefardí, tanto en los rituales del ciclo de la vida como en sus funciones de entretenimiento social. Dada la riqueza del repertorio recogido, en especial, en grabaciones de encuestas, el presente artículo presenta una visión general de los rasgos característicos del cancionero sefardí, sus textos y sus melodías, así como sus semejanzas y concordancias con otros repertorios, tanto en fuentes hispánicas antiguas como en la tradición oral hispánica y sus relaciones musicales con las tradiciones orales de las culturas con las cuales convivieron las comunidades sefardíes en sus diásporas.
Recepción de Cristóbal de Morales en Valladolid (ca. 1530-1550): una opinión, una tablatura, un inventario y el manuscrito 5 (E-V5)
Authors: Aguirre Rincón Soterraña
Published: January 2024

Este artículo se ocupa de la recepción de la música de Cristóbal de Morales en la efervescente villa de Valladolid durante las décadas de los años 30 y 40 del siglo XVI, periodo que abarca los años previos a su establecimiento en Roma (1535) así como los inmediatamente posteriores a su definitivo regreso a España (1545). Se basa en cuatro testimonios principales: la valoración que del autor realizara el profesor Cristóbal de Villalón; en una tablatura; un inventario realizado en 1547 en la colegial vallisoletana; y en el singular Manuscrito 5 (EV5). Un estudio detallado de este «libro blanco» ha permitido ofrecer su estructura completa y compleja que, conjugada con la información aportada por el inventario y por otras fuentes documentales, impulsan una mejor comprensión de la cronología y funcionalidad de esta relevante fuente para el estudio de la música del hispalense. También se presenta al responsable de su copia, un mediador esencial en la difusión de la música de Cristóbal de Morales en la Colegial vallisoletana.
La Orquesta de Radiotelevisión Española en la transición (1975-1982): luces y sombras de la política musical oficial
Authors: Solís Toya
Published: January 2024

Este artículo estudia la Orquesta de Radiotelevisión Española (ORTVE) en la Transición como una aproximación a la política musical de este proceso de cambio. Este conjunto pertenecía a la Dirección General de Radiodifusión, excesivamente dependiente del partido de Adolfo Suárez en el Gobierno (Unión de Centro Democrático), lo que dio lugar a numerosas fricciones entre los intereses políticos y los musicales. Se analiza esta situación con base en el repertorio español contemporáneo programado, uno de los objetivos para los que la ORTVE había sido creada. Del mismo modo, la promoción de música del momento era uno de los propósitos perseguidos por las instancias oficiales en la Transición, como signo de modernización. Algunos delegados de la orquesta, como Enrique de la Hoz y Miguel Ángel Coria, procuraron cumplir este plan; sin embargo, la falta de fluidez entre la Dirección General de Música, la de Radiodifusión y el propio conjunto obstaculizó su trabajo. Esto relegó a la ORTVE a un plano subsidiario con respecto a la Orquesta Nacional de España (ONE, su «hermana mayor»), de la que dependía en muchos sentidos. En esta investigación también se reflexiona sobre el rol de las mujeres en la orquesta, como instrumentistas y compositoras. Este artículo no hubiera sido posible sin las fuentes primarias del Archivo General de la Administración y el archivo personal de Ángel Medina, concerniente a la Delegación General de la ORTVE.
L’instrumentum des productions de bouche
Authors: Raux Stéphanie
Published: January 2024

Les données mobilières archéologiques relatives à la subsistance ont été considérablement enrichies par le développement ces dernières décennies des fouilles programmées et préventives. De nombreux objets ont ainsi été mis au jour en contexte, sur des sites ruraux et urbains en Gaule méridionale, illustrant les différentes étapes de production, transformation, conditionnement pour le transport, conservation et consommation des denrées alimentaires, végétales et animales. Ces ustensiles revêtent des caractères qui peuvent être spécifiques ou polyvalents, parfois évolutifs en fonction de l’adoption ou non de nouveaux procédés d’exploitation, de commercialisation ou de modes de consommation liés à la romanisation. L’article permet de faire ici un état des lieux d’une part de l’instrumentum mis en œuvre dans le cadre d’une économie vivrière en général, et d’autre part des spécificités régionales à partir d’ensembles fonctionnels de Narbonnaise occidentale.
Rural Households’ Youth Participation in Rice Agribusiness Value Chain Activities: Implications for Employment Opportunities
Authors: Alabi D. L. , Alao O. T. , Olagunju I. B.
Published: January 2024

Purpose: Rice is a food security and multi-value chain crop in Nigeria having the potential to provide employment and income for the teeming population of unemployed youth. The study identified the various rice value chain activities youth participated in, investigated their levels of participation, how they perceived participation in rice agribusiness value chain activities and the constraints affecting their participation.Research Method: A four-stage sampling procedure was used to sample youth from 144 rural households engaging in rice agribusiness activities. Well-validated interview schedule was used to collect quantitative data which was summarised using appropriate descriptive statistics with the hypotheses also adequately tested.Findings: Results show that more males were participating in rice agribusiness value chain activities with a mean age of 29 years. Respondents participated in multiple rice agribusiness activities and majority (77.8%) had favourable perception towards participation. Constraints limiting youth participation include poor land tenure system and bird invasion; majority (89.6%) participated in rice agribusiness value chain activities at high level. Income (r = 0.250) and length of experience (r = 0.211) were significantly related to youth participation. Difference existed in youth participation in rice value chain activities across the three agro-ecological zones. Originality/value: The study revealed that youth actively participated in almost all the activities along rice agribusiness value chain.
Intermittent obstruction of the left coronary artery ostia by a congenital supravalvular aortic membrane in an adult
Authors: El Ghali Tanae , Fellat Nadia , Doghmi Nawal , Cherti Mohamed
Published: January 2024

Left main coronary artery obstruction due to a congenital supra-aortic membrane is a rare anomaly, but it can have serious consequences, including significant myocardial ischemia that may result in impaired ventricular function or even sudden death. Therefore, early diagnosis and treatment of this condition are crucial for improving patient outcomes. We present, in this report, a patient with intermittent obstruction of the left coronary arteries caused by a congenital ostial membrane diagnosed in adulthood that resulted in myocardial ischemia.
Use of Zephyr stent in congenital heart diseases: A single-center study
Authors: Bandyopadhyay Sudipta , Sivaprakasam Muthukumaran Chinnaswamy
Published: January 2024

Large vessel stenosis is currently successfully treated with percutaneous stent implantation. Zephyr stent is a cobalt-chromium peripheral stent specifically designed for large-vessel stenting. Its specific “S-“ and “C-“ shaped flexible polylinks prevent stent foreshortening and recoil. We report our experience of using Zephyr among the pediatric population and their medium-term outcome. The study included a total of 19 patients treated with 21 Zephyr stents. The indications for stenting included coarctation of the aorta (four patients), stenosed pulmonary artery (eight patients), stenosed right ventricular outflow tract (five patients) or conduit (one patient), and percutaneous Fontan (one patient). All the procedures were successful. None of the patients showed any stent-related complications. Stent fractures, foreshortening, or recoil were not seen during follow-up. Our medium-term (1–20 months) follow-up showed a favorable outcome. One patient developed restenosis. Zephyr stent is a good therapeutic option for large-vessel stenting. However, it needs large-scale studies for further confirmation.
Morphometry of the superior ophthalmic vein unaffected by dilating factors
Authors: Mehrhoff Farida , Zolnierz Melissa S. , Barry Alla G. , Kuhnert Shelby K. , Kilmer Mary K. , Tsyplakov Dmitry E. , Hillard Robert
Published: January 2024

Context:

Data on the superior ophthalmic vein (SOV) dilation captivate the attention of neurologists as an early sign of several neurovascular disease manifestations, but measurements vary widely in publications.

Aims:

This study attempts to shed light on disparate data and develop more stringent criteria for determining the dilation of these veins.

Settings and Design:

To this end, 44 orbits of 25 formalin-embalmed human cadavers without risk factors for SOV dilation were dissected.

Materials and Methods:

The SOV branching pattern and length were photographed, and multiple segments were analyzed microscopically, histologically, and statistically.

Statistical Analysis Used:

Simple descriptive statistics as well as linear regression were used to compare the data.

Results:

The mean SOV diameter was 2.05 ± 0.7 mm. Other morphometric findings included the presence of valves and an unreported branching pattern of the SOV.

Conclusion:

Knowledge of the mean diameter serves as a diagnostic reference to help recognize SOV dilation, while the unreported variation of SOV (trifurcation at the exit point) may have implications in neurosurgery when using this vein to approach the cavernous sinus.
Corneal stromal graphite particles after pencil injury
Authors: Algendy Abdelhalim Atef , Abdelghany Marwa Farouk
Published: January 2024

Penetrating ocular injuries from pencils and pencil lead are frequently seen in children and may cause an intraocular infection or serious intraocular sterile inflammatory reaction. However, it has been noted that the carbon particles from pencil lead may remain inert in the eye without inciting inflammation for long duration. We report a case of a 21-year-old male with an intracorneal graphite foreign bodies following penetrating ocular injury.
Anterior subluxation of lens in a quiet eye: Initial presentation and outcome
Authors: Agarwalla Vijaya , Ahuja Nisha , Kochar Rashi , Patel Dhara
Published: January 2024

A subluxated lens is often associated with zonular weakness, which makes surgery with lens extraction and implantation of an intraocular lens particularly challenging. A 40-year-old healthy male presented with idiopathic partial anterior subluxation of lens without any signs of pupillary block glaucoma, corneal endothelial damage, or uveitis. Due to the absence of adequate zonular support, lens extraction with anterior vitrectomy and retropupillary iris claw lens implantation was done in this patient with good visual outcome. Lens extraction with anterior vitrectomy and retropupillary iris claw implantation can be a good surgical option in such cases.
Unusual fractured dexamethasone implant in the vitreous cavity
Authors: Telavane Jui , Patel Megha B. , Nene Amit S. , Pirdankar Onkar H. , Shah Smitesh , Badole Pushpanjali , Shenoy Pratik
Published: January 2024

Ozurdex is an approved drug for managing vitritis. Raised intraocular pressure and cataract formation are known complications of Ozurdex implant; however, a fractured Ozurdex implant after injection is a rare entity. Here, we report a case of a 19-year-old male patient who received an intravitreal Ozurdex implant for vitritis, which was found to be broken into three pieces at a 1-week follow-up. Usually, the breakage of Ozurdex in the vitreous cavity does not alter its efficacy or result in any complications and, thus, does not require any intervention. However, frequent and careful monitoring is required to rule out any unexpected complications.
A rare case of complex angiomatous cyst with features of lymphangio-hemangioma in a child
Authors: Maneksha V. , Aparna K. S.
Published: January 2024

A 3-year-old child was brought into the outpatient department with abaxial proptosis and inferior dystopia in the right eye. A computed tomography scan showed an isodense mass in the superomedial quadrant involving both intra- and extraconal space. Orbitotomy was done, and mass was removed in toto. Histopathological examination showed a mixture of vascular and lymphatic elements suggestive of complex angioma. The lesion was diagnosed as lymphangio-hemangioma based on the dominance of lymphatic tissue. Detailed differentiation of the type of vascular lesions is important because it may influence treatment considerably.
Cilia incarnatum externum presenting in an interesting “running-stitch” pattern
Authors: Gupta Priyanka , Kaur Harleen , Kaur Navdeep , Goyal Aman
Published: January 2024

Two females, 25 and 35-year old, presented with complaint of localized bumpy swelling on right upper lid, with intermittent episodes of pain. On examination, both were found to have cilia incarnatum externum in an atypical “running-stitch” pattern, wherein the eyelash emerged out of the skin after a brief subcutaneous course. Epilation was done in both the cases and a tract was identified in one of them, which was removed completely to prevent recurrence.
Comparison of Different Endodontic Access Cavity Designs on the Fracture Resistance of Tooth in WaveOne Gold and TruNatomy Instrumentation
Authors: Kumar Mukesh , Rai Rahul Kumar , Shahi Siddharth , Singh Anshdeep , Aggarwal Nidhi , Mohammad El-Shamy Fahiem Mohammad
Published: January 2024

ABSTRACT

Background:

An important aspect of the preparation of the access cavity and biomechanical preparation of the root canal is to safeguard as much of the tooth’s framework as possible without affecting access and visibility.

Objectives:

To compare the impact of the conservative design of access preparation and traditional design of access preparation in association with TruNatomy endodontic instrumentation and WaveOne Gold endodontic instrumentation on resistance to fracture by the design of a cavity for endodontic access using finite element analysis

Materials and Methods:

Micro-CT radiographic images of 16 human first permanent molars of the mandible were included in the study to create representative finite element analysis computational models.

Results:

A significant reduction in load for failure after endodontic preparation was observed in TDAP subcategories as compared to specimens with CDAP. However, the reduction in load for failure was comparable in both endodontic instrument systems within the CDAP and TDAP

Conclusion:

A significant reduction in load for failure after endodontic preparation was observed in the traditional design of access preparation subcategories as compared to specimens with the conventional design of access preparation.
Challenges University Students Face while Studying away from Hometown: A Cross-Sectional Study
Authors: Medani Khalid E. , Alqadhibi Mohammed A. , Almutairi Abdullah M. , Asiree Rayan H. A. , Silsilah Mohammad A. , Almutairi Khalid N. , Sami Waqas
Published: January 2024

ABSTRACT

This study aims to highlight the challenges that undergraduates face when traveling a significant distance from home to study. These challenges are psychological, financial, and nutritional. The study was descriptive and based on a survey conducted to investigate the challenges faced by university students while studying away from their hometown. A questionnaire was used to collect data from 214 undergraduates between February and April 2021. The collected data were analyzed using the computer program SPSS version 24. Pearson’s Chi-square and Fisher’s exact tests were applied to observe associations between qualitative variables. A total of 214 undergraduates participated in the study, with a median age of 22 years. The study found significant relationships between weight change and housing (P < 0.001), weight change and distance (P < 0.001), level of homesickness and housing (P < 0.001), level of homesickness and college distance (P < 0.001), and financial status with housing (P = 0.025). The study revealed that a significant number of undergraduate participants face psychological, financial, and nutritional challenges. These challenges include psychosocial issues, such as homesickness financial difficulties, such as money issues, and nutritional concerns, such as weight changes.
An Ex-vivo Comparative Study to Evaluate the Efficacy of Three Root Canal Irrigation Systems in Reduction of Enterococcus Faecalis
Authors: Asiri Ashwaq
Published: January 2024

ABSTRACT

Aim:

The purpose of this ex-vivo study is to evaluate the efficacy of three irrigation techniques in the reduction of E. faecalis in root canal.

Materials and Methods:

Eighty healthy maxillary anteriors were employed in this investigation. The bacteria E. faecalis was left on teeth for 7 days while they were kept. Once teeth were contaminated, they were randomly divided into three groups of 20 for experimentation and a control group of 20 for comparison. NaviTip FX was used to irrigate Group I, the Max-I-probe was used to water Group II, and the Endovac system was used to water Group III. The number of colony forming units (CFUs) was determined by growing bacteria from root canal samples for 2 days in Brain heart infusion agar after chemo-mechanical operations.

Results:

There was a substantial decrease in bacterial numbers across all experimental groups compared to group IV (control). Group III (Endovac) had the fewest bacterial colonies among the test groups. There were no discernible changes between Group I (the Navitip FX) and Group II (the Max I probe).

Conclusion:

Endovac was the most effective of the three irrigation methods for reducing CFUs. This study’s findings lend credence to the idea that the apical negative pressure approach has more potential than the conventional irrigation delivery system for achieving an enhanced antibacterial impact.
CNN-based Approach for Robust Detection of Copy-Move Forgery in Images
Authors: S Arivazhagan , Russel Newlin Shebiah , M Saranyaa , R Shanmuga Priya
Published: January 2024

With the rise of high-quality forged images on social media and other platforms, there is a need for algorithms that can recognize the originality. Detecting copy-move forgery is essential for ensuring the authenticity and integrity of digital images, preventing fraud and deception, and upholding the law. Copy-move forgery is the act of duplicating and pasting a portion of an image to another location within the same image. To address these issues, we propose two deep learning approaches - one using a custom architecture and the other using transfer learning. We test our method against a number of benchmark datasets and demonstrate that, in terms of accuracy and robustness against various types of image distortions, it outperforms current state-of-the-art methods. Our proposed method has applications in digital forensics, copyright defence, and image authenticity.
Real interpolation for mixed Lorentz spaces and Minkowski's inequality
Authors: Mandel Rainer
Published: January 2024

We prove embeddings and identities for real interpolation spaces between mixed Lorentz spaces. This partly relies on Minkowski's (reverse) integral inequality in Lorentz spaces

L^{p,r}(X)

under optimal assumptions on the exponents

(p,r)\in (0,\infty)\times (0,\infty]

.
A descriptive study on Turkish young consumers’ soft drink buying behaviors
Authors: Yarimoglu Emel , Cebisli Iremsu , Levent Ali Riza , Tesik Talha , Ozan Melisa
Published: January 2024

Over the past years, beverages with excessive sugar, caffeine and sodium were consumed more. Today, consumers have been more educated, prefer healthier options, and growing trend of healthy lifestyle have led to an increase demand for natural and healthy products. The aim of the study was to analyze young consumers’ soft drink buying behaviors in threefold by explaining reasons of buying soft drinks, factors that affect soft drink buying decisions, and preferences about ingredients in soft drinks. The survey method was used, and the field study was conducted with university students in Izmir City, Turkiye by convenience sampling method. The results showed that young consumers buy soft drinks since they like its taste, they can use them as a substitution of water when they are thirsty, and they can find soft drinks easily at every point of sales. It was obtained that the most important factor affecting students’ soft drink buying decisions is the brand name of the soft drink. Besides, it was found out that packaging, aroma diversity, and having healthy ingredients also affect their buying decisions. It was revealed that young generation’s main concern regarding the ingredients in soft drinks was sugar level. The study contributes to literature by investigating young consumers’ soft drinks buying behaviors and showing how health-conscious behaviors may change buying behaviors.
Network parameterizations for the Grassmannian
Authors: Talaska Kelli , Williams Lauren
Published: January 2024

Deodhar introduced his decomposition of partial flag varieties as a tool for understanding Kazhdan-Lusztig polynomials. The Deodhar decomposition of the Grassmannian is also useful in the context of soliton solutions to the KP equation, as shown by Kodama and the second author. Deodhar components $S_D$ of the Grassmannian are in bijection with certain tableaux $D$ called $\textit{Go-diagrams}$, and each component is isomorphic to $(\mathbb{K}^*)^a ×\mathbb{K})^b$ for some non-negative integers $a$ and $b$. Our main result is an explicit parameterization of each Deodhar component in the Grassmannian in terms of networks. More specifically, from a Go-diagram $D$ we construct a weighted network $N_D$ and its $\textit{weight matrix}$ $W_D$, whose entries enumerate directed paths in $N_D$. By letting the weights in the network vary over $\mathbb{K}$ or $\mathbb{K} ^*$ as appropriate, one gets a parametrization of the Deodhar component $S_D$. One application of such a parametrization is that one may immediately determine which Plücker coordinates are vanishing and nonvanishing, by using the Lindstrom-Gessel-Viennot Lemma. We also give a (minimal) characterization of each Deodhar component in terms of Plücker coordinates.

Deodhar a introduit une décomposition des variétés drapeaux pour comprendre les polynômes de Kazhdan-Lusztig. La décomposition de Deodhar des Grassmanniennes est aussi utile dans le contexte des solutions solitons de l’équation KP, ce qui a été établi par Kodama et le deuxième auteur. Les composantes de Deodhar $S_D$ sont en bijection avec certains tableaux $D$ appelés $\textit{diagrammes de Go}$, et chaque composante est isomorphe à $(\mathbb{K}^*)^a ×\mathbb{K})^b$ où $a$ et $b$ sont des entiers positifs. Notre résultat principal est une paramétrisation explicite de chaque composante de Deodhar des Grassmanniennes en termes de réseaux. Plus précisément, à partir d’un diagramme de Go $D$, nous construisons un réseau $N_D$ et sa $\textit{matrice de poids}$ $W_D$, dont les composantes énumèrent les chemins dirigés dans $N_D$. En faisantvarier les poids dans $\mathbb{K}$ ou $\mathbb{K} ^*$, nous obtenons une paramétrisation de la composante de Deodhar $S_D$. Une applicationde cette paramétrisation est que nous pouvons déterminer quelles coordonnées de Plücker s’annulent, en utilisant le lemme de Lindstrom-Gessel-Viennot. Nous donnons aussi une caractérisation minimale de chaque composante en termes de coordonnées de Plücker.
Spanning forests in regular planar maps (conference version)
Authors: Bousquet-Mélou Mireille , Courtiel Julien
Published: January 2024

We address the enumeration of $p$-valent planar maps equipped with a spanning forest, with a weight $z$ per face and a weight $u$ per component of the forest. Equivalently, we count regular maps equipped with a spanning tree, with a weight $z$ per face and a weight $\mu:=u+1$ per internally active edge, in the sense of Tutte. This enumeration problem corresponds to the limit $q \rightarrow 0$ of the $q$-state Potts model on the (dual) $p$-angulations. Our approach is purely combinatorial. The generating function, denoted by $F(z,u)$, is expressed in terms of a pair of series defined by an implicit system involving doubly hypergeometric functions. We derive from this system that $F(z,u)$ is $\textit{differentially algebraic}$, that is, satisfies a differential equation (in $z$) with polynomial coefficients in $z$ and $u$. This has recently been proved for the more general Potts model on 3-valent maps, but via a much more involved and less combinatorial proof. For $u \geq -1$, we study the singularities of $F(z,u)$ and the corresponding asymptotic behaviour of its $n^{\mathrm{th}}$ coefficient. For $u > 0$, we find the standard asymptotic behaviour of planar maps, with a subexponential factor $n^{-5/2}$. At $u=0$ we witness a phase transition with a factor $n^{-3}$. When $u \in[-1,0)$, we obtain an extremely unusual behaviour in $n^{-3}/(\log n)^2$. To our knowledge, this is a new ''universality class'' of planar maps.
Schubert polynomials and $k$-Schur functions (Extended abstract)
Authors: Benedetti Carolina , Bergeron Nantel
Published: January 2024

The main purpose of this paper is to show that the multiplication of a Schubert polynomial of finite type $A$ by a Schur function can be understood from the multiplication in the space of dual $k$-Schur functions. Using earlier work by the second author, we encode both problems by means of quasisymmetric functions. On the Schubert vs. Schur side, we study the $r$-Bruhat order given by Bergeron-Sottile, along with certain operators associated to this order. On the other side, we connect this poset with a graph on dual $k$-Schur functions given by studying the affine grassmannian order of Lam-Lapointe-Morse-Shimozono. Also, we define operators associated to the graph on dual $k$-Schur functions which are analogous to the ones given for the Schubert vs. Schur problem.

Le but principal de cet article est de montrer que la multiplication d’un polynôme de Schubert de type fini $A$ par une fonction de Schur peut être comprise à partir de la multiplication dans l’espace dual des fonctions $k$-Schur. Les travaux antérieurs par le second auteur, nous permet de coder ces deux problèmes au moyen de fonctions quasi-symétriques. Du côté Schubert vs Schur, nous étudions l’ordre partiel $r$-Bruhat donné par Bergeron-Sottile, ainsi que certains opérateurs associés à cet ordre. Nous donnons une relation entre l’ordre $r$-Bruhat et le graphe de Bruhat sur les fonctions $k$-Schur duales données par l’étude de l’ordre affine grassmannienne de Lam-Lapointe-Morse-Shimozono. En outre, nous définissons des opérateurs associés a ce graphe qui sont analogues à ceux donnés pour le problème Schubert vs Schur.
Adinkras for Mathematicians
Authors: Zhang Yan X.
Published: January 2024

$\textit{Adinkras}$ are graphical tools created for the study of supersymmetry representations. Besides having inherent interest for physicists, the study of adinkras has already shown connections with coding theory and Clifford algebras. Furthermore, adinkras offer many natural and accessible mathematical problems of combinatorial nature. We present the foundations for a mathematical audience, make new connections to other fields (homological algebra, poset theory, and polytopes), and solve some of these problems. Original results include the enumeration of all hypercube adinkras through dimension 5, the enumeration of odd dashings of adinkras for any dimension, and a connection between rankings and the chromatic polynomial for certain graphs.

Les $\textit{adinkras}$ sont des dessins qui sont utilisés pour étudier les représentations des théories supersymétriques. Outre leur intérêt en physique, les adinkras sont aussi utiles en connexion avec la théorie des codes et les algèbres de Clifford. De plus, les adinkras offrent beaucoup de problèmes de nature combinatoire qui sont à la fois naturels et accessibles. Nous présentons une introduction pour une audience de mathématiciens, présentons de nouvelles connexions avec d’autres domaines (algèbres homologiques, ensembles partiellement ordonnés, polytopes), et résolvons certains problèmes. Parmi les résultats nouveaux, nous énumérons les adinkras de l’hypercube de dimension inférieure ou égale à 5, nous énumérons les $\textit{odd dashings}$ en toute dimension, et établissons une relation entre les $\textit{rankings}$ et le polynôme chromatique pour certains graphes.
A review of flame protection of wooden material and future potential with nano additives
Authors: Lahtela Ville , Turku Irina , Kärki Timo
Published: January 2024

Wood is a highly sustainable material and there is significant interest in its use in the construction industry in terms of modern building construction. However, safety rules and regulations, including fireproof requirements, have become increasingly demanding. In this regard, more effective and eco-friendly approaches for wooden materials treatment related to this topic are subject to research interest in laboratories around the world. The rapid development of nanotechnology offers new materials with unique properties, which will be able to partly substitute or even replace regular chemicals, often toxic to the environment, in the future. This paper overviews traditional fire retarding methods and fire retardants that are applied for the modification of wooden materials. In addition, the potential use of nanomaterials for wood and wooden applications were discussed by extensively literature review.
Keywords: wood-based materials; flame retardancy; reaction-to-fire testing; nanomaterials; nano additives.
Philosophy and Early Christianity: Reflections on the Meaning of Patristic Philosophical Theology
Authors: Ramelli Ilaria
Published: January 2024

Christians had to structure their kerygma and teachings philosophically. It is on philosophy that they built the dogmatics of Christianity in the first ecumenical councils, which discussed Trinitarian theology and Christology. This was imperative, since Christ is the Logos and is the centre of all Christianity. So, Christianity must be logical/rational and informed philosophically. Many were the protagonists of Patristic Philosophical Theology, but Origen of Alexandria played a pivotal role in this strategic move.
Reason and Faith: A Conflict through the History of Philosophy
Authors: Bermúdez Vázquez Manuel
Published: January 2024

The relationship between faith and reason has been a subject of profound philosophical inquiry throughout history. Philosophers from different periods and traditions have grappled with the tension between religious belief and rational inquiry, shaping our understanding of the complex relationship between faith and reason. In ancient times, thinkers explored the nature of knowledge and the role of reason in uncovering truth. While reason played a central role, faith in divine beings also had significance. During the medieval period, theologians sought to reconcile faith and reason, considering them as complementary faculties for attaining truth. Throughout history, the exploration of the relationship between faith and reason has shaped philosophical discourse and provided insights into knowledge, belief, and the human condition. The ongoing dialogue continues to stimulate intellectual inquiry and offers different perspectives on the nature of truth and the meaning of existence.
PROCESOS DE SUCESIÓN Y PERMANENCIA DE LAS PYMES FAMILIARES BASADAS EN EL MODELO TRIDIMENSIONAL O DE GERSICK
Authors: Mogrovejo Pintado Tamara Cristina
Published: January 2024

Las pymes familiares son clave en la economía de muchos países, incluyendo el cantón Cuenca. No solo impulsan el crecimiento económico y el empleo, sino que también representan la continuidad de tradiciones y valores familiares. Sin embargo, enfrentan desafíos únicos debido a la intersección de intereses empresariales y familiares. La sucesión y permanencia exitosa son fundamentales para su sostenibilidad y éxito a largo plazo. El objetivo de este estudio fue examinar las empresas familiares en el cantón Cuenca utilizando la metodología tridimensional (empresa, familia y propiedad) para comprender su dinámica y desafíos. La metodología implica la recopilación de datos de múltiples fuentes, como entrevistas y análisis de documentos, para evaluar aspectos relacionados con la gestión empresarial, las dinámicas familiares y la estructura de propiedad a una muestra de 329 empresas familiares. Los resultados fueron tabulados en SPSS. El estudio reveló que estas entidades en el cantón Cuenca enfrentan desafíos significativos en áreas como la gestión administrativa, la falta de políticas de sucesión claras y la necesidad de equilibrar las dinámicas familiares y empresariales, específicamente se identificaron áreas críticas para mejorar la sostenibilidad y el 30% señala problemas importantes en la relación entre la familia y la empresa y posiblemente caracterizada por conflictos significativos.