bluuebunny/crossref_metadata_2025 huggingface dataset:
Les établissements perchés de l’Antiquité tardive et du haut Moyen Âge en Franche-Comté (IVe-IXe siècle) : la reculée de Baume-les-Messieurs et le val de Voiteur (Jura)
Authors: Billoin David , Gandel Philippe
Published: March 2023

Ce bref panorama des acquis de la recherche sur les établissements perchés et fortifiés tardo-antiques et alto-médiévaux en Franche-Comté s’illustre par une étude de cas d’un espace géographique particulièrement dynamique : la reculée de Baume-les-Messieurs et le val de Voiteur. Situé au nord de Lons-le-Saunier sur le piémont du Jura, longé par une grande voie et traversé par des axes qui mettent en relation les plateaux du Jura et la plaine de Bresse, ce secteur est densément occupé depuis la Protohistoire. Il se caractérise par une densité des occupations de hauteur fortifiées en lien probablement avec le contrôle et la gestion du sel. Une économie réactivée après la « parenthèse » romaine qui voit la réoccupation de bon nombre de ces points hauts stratégiques jusqu’à l’aube de la période féodale.
La fabrique d’une langue originale : de l’illégitimité à la liberté. Entretien avec Anna Moï
Authors: Nguyen Giang-Huong , Moï Anna
Published: March 2023

Originaire du Viêt Nam, Anna Moï vit et travaille à Paris. Elle a publié plusieurs recueils de nouvelles et romans, parmi lesquels Riz noir, Rapaces, Le venin du papillon, Douze palais de mémoire chez Gallimard. Le prix littéraire 2021 de La Renaissance Française lui est remis pour son dernier roman. Lors de la cérémonie annuelle de l’Académie française, le 1er décembre 2022, le grand prix Hervé Deluen, qui récompense « toute personne ou toute institution qui contribue efficacement à la défense et à la promotion du français comme langue internationale », lui a été remis.
La dénomination des sites web algériens : un compromis entre créativité linguistique et contraintes juridico-commerciales
Authors: Hadjari Farid , Benramdane Farid
Published: March 2023

L’opération, purement linguistique, qui consiste à doter un site web d’un nom de domaine (NDD) est conditionnée par la combinaison de contraintes à la fois techniques, sociolinguistiques et juridico-commerciales. La résolution de ce problème passe impérativement par la mise en place de stratégies linguistiques innovantes, toutes tournées vers la réalisation d’objectifs bien spécifiques, en l’occurrence, l’information, la captation et la mémorisation. Cet article qui s’inscrit dans le champ de l’onomastique se propose d’identifier les procédés linguistiques mis en place dans l’opération de dénomination des sites web. Pour ce faire, deux approches distinctes mais complémentaires sont exploitées. L’approche sémasiologique qui permet d’identifier des schèmes dénominatifs sera utilisée comme toile de fond afin d’introduire l’approche onomasiologique qui permettra de dresser le profil des opérations relatives à la morphologie constructionnelle.
L’open-badge comme outil au service de la reconnaissance des compétences transversales : le point de vue des étudiant·es de l’enseignement supérieur
Authors: Rollin Bastien
Published: March 2023

La mondialisation ou encore l’importance grandissante des technologies de l’information et de la communication ont profondément transformé nos sociétés. De plus, la récente crise sanitaire a renforcé l’incertitude autour d’un monde en perpétuelle évolution. Les organisations internationales insistent sur la nécessité d’investir dans l’orientation scolaire et professionnelle en mettant en avant la transformation numérique comme l’une des pistes à suivre. Ainsi, certaines certifications numériques tendent à prendre de plus en plus d’importance, notamment pour répondre à la demande de reconnaissance des compétences transversales. C’est le cas des open-badges au sein des universités francophones. Pourtant l’intérêt pour un tel outil digital reste mal documenté. À partir d’une méthode quantitative, cet article propose donc de revenir sur l’intérêt des étudiant·es de l’enseignement supérieur pour ce nouvel outil numérique. Notre analyse révèle que certaines caractéristiques, comme la motivation des étudiant·es, leur choix de filière d’études ou encore leur rapport aux expériences extracurriculaires, influencent leur niveau d’intérêt.
The Contribution of Urban Domestic Waste Management to the Circular Economy
Authors: Serralha Maria de Fátima Nunes , Anderluh Alexandra , Santos Beatriz Sara , Radványi Dalma , Leščevica Maira , Mesbahi Zahra , Carriço Nelson , Nolz Pamela , De Coninck Sarah , Galatanu Sergiu Valentin
Published: March 2023

In line with the European community's goal, each EU Member State should recycle at least 60% of municipal waste or prepare them for reuse. In this chapter, the authors intend to show the waste management strategies implemented in six European countries, namely, Austria, Belgium, Hungary, Latvia, Portugal, and Romania. The methodology used was to analyse reports and publications on the management of urban waste and dialogue with some technicians of the municipalities. This knowledge of what is done in each country allows others to learn from the best and most innovative solutions and reflect on the various waste management forms implemented, according to environmental, economic, and social perspectives. The analysis identifies several challenges to bring up in further research and projects, with the contribution of the different countries and the synergies that might be obtained. The authors intend to promote a decrease in consumption and an increase in reuse, separately collected waste and recycling, contributing to circular economic growth and the sustainability of the planet.
Health Financing Challenges Towards Accomplishment of Sustainable Development Goals
Authors: Dzingirai Mufaro
Published: March 2023

Health financing has increasingly become a much-debated concept when it comes to ensuring a healthy nation in recent years. Surprisingly, health financing towards attaining sustainable development has been given scant attention in the development discourse. As such, this calls for extending our understanding of health financing in the context of African countries, especially in the unique context of Zimbabwe. Given this information, this chapter focuses on the health financing challenges. Six health financing challenges were ascertained, that is, fragile economy; corruption; unanticipated health shocks; budget constraints; poor political commitment towards public health; and high-out-of-pocket payments. In order to deal with these serious health financing challenges, a plethora of recommendations were offered herein. The research outcomes of this study could help policymakers and practitioners.
Examination of E-Commerce in the World by Operational Factors
Authors: Gencer Yasin Galip
Published: March 2023

The internet of things (IoT) has emerged with the development of internet technologies. The aim of this research is to investigate the importance of these subjects by conducting a detailed literature review on the concepts of internet of things and e-commerce. In this context, firstly, literature information about e-commerce and then literature information about internet of things are included in the research. Then, the concept of E-commerce, types of E-commerce, and the concepts of E-commerce in the world were discussed in the research. In next chapters, the concept of the internet of things, the historical development of the internet of things, the elements of the internet of things, the operational and consumer benefits of the internet of things, and the application areas of internet of things are explained. According to the results of this research, it is possible to say that while the internet of things helps E-Commerce activities to be faster, more efficient, and of higher quality, E-Commerce activities also contribute to the development of internet of things technologies.
Strategic Pathway Determination for a State Hospital in Terms of an Integrated Facility Management System
Authors: Gedikli Erman , Uslu Yeter Demir
Published: March 2023

The purpose of this study is to develop strategies to provide effective, efficient, and patient safety facility management in a public hospital. Exploratory sequential mixed method research design was employed. Quantitative approaches were used in the second stage of the investigation after qualitative methods in the first stage. The universe of the research consists of all the staff. The criterion sampling technique was applied during the qualitative phase. In the first phase 39 managers were interviewed individually as part of data collection process. To assess the priority of the need group, the AHP questionnaire was used to seven managers in ultimate decision-making positions during the second phase of data collecting. Finally, decision-makers should prioritize taking action to address the needs identified under the respective topics of emergency preparedness and business continuity, human factors, and communication, respectively. The environmental management and sustainability was determined as the last priority group.
What Are the Determinants of the Attitude of Civil Servants Toward Using e-Public Procurement?
Authors: Alomar Mohamad Amin
Published: March 2023

Civil servants are the main users of e-public procurement applications. Their attitude toward using the new system is a crucial element for its successful implementation. However, few studies focused on this topic in public administration research. To address this question, the author examines the digitalization of public procurement in Belgium. He relied on a mixed quantitative-qualitative methodology. The findings showed that six factors were validated quantitatively and qualitatively as having significant influence on the attitude of civil servants, namely perceived usefulness, perceived ease of use, training, resources, position of the hierarchy, and clients' attitudes. The author concludes with theoretical and practical implications as well as an agenda for future research.
An Empirical Study on the Information Formality Motivation, Social Influence, and Goal Commitment of Knowledge Workers
Authors: Hwang Yujong , Lin Hui , Shin Donghee
Published: March 2023

A knowledge worker's goal commitment is critical to the success of system implementation in the organization. This paper investigates an individual's information formality motivation and social influence as important determinants in developing goal commitment in the system implementation based on the social psychology and information management literature. An empirical test of the proposed model was conducted in the field test (n = 148). PLS was used to analyze the model and supported the validity of the results. Social influence and information formality influence knowledge worker's goal commitment (R2 = 0.36) as expected. Social influence has a higher effect on goal commitment than information formality motivation. The results of this study will help us understand the antecedents of goal commitment in the system implementation based on the social influence theory and personal information management model. The paper includes implications for the designers and information system (IS) managers to effectively understand knowledge worker's goal commitment in the organization.
The Creation and Adoption of Technology-Centred Makerpaces in South African Academic Libraries
Authors: Masenya Tlou Maggie
Published: March 2023

Libraries of today are not just a place to consult books and other pedagogical materials but have completely transformed into a space where users can interact, create, and collaborate. Library and information centres are creating spaces called makerspaces in this digital transformation era, whereby researchers work together and share ideas in their various areas of specialisation. Makerspace are relatively new phenomena that create a collaborative and innovative environment for individuals to work on projects and learn about emerging technologies. Technology-centred makerspaces are increasingly being built in academic libraries, typically featuring high-tech machines and software that facilitate creation and design. This study investigated the creation and adoption of technology-centred makerspaces in academic libraries and the impact that makerspaces have on academic innovation. The study utilized literature review analyzed secondary data from articles, journals, periodicals, and publications to identify the need to design makerspaces, what is required in setting up a makerspace, and how academic libraries utilize makerspaces. The benefits accrued from makerspaces, barriers to effective adoption of these spaces, factors enabling adoption of makerspaces, and the state-of-the-art facilities offered by the library were also explored in this study. It is recommended that library management should not hesitate to establish makerspaces in their respective academic libraries, as this will aid in promoting knowledge-sharing, collaboration, creativity, and innovation.
A Narrative Biographical Study of Faculty Collaboration in E-Portfolio Development
Authors: Miller JungKang , Chung Mi-Hyun
Published: March 2023

Since an e-portfolio system was adapted at the authors' college, the faculty has been encouraged to use e-portfolios in various areas from professional development to instructional purposes. In this paper, they describe two cases of faculty to discuss how they became collaborative partners who support each other in conceptualizing e-portfolios as an instructional tool, designing learning activities for graduate courses, and they reflect on their own practices for enhancing teaching and learning based on the results from interviews, reflective essays, questionnaires and participation in broader learning communities, and a review of their signature e-portfolio assignments. Additionally, they argue how broader teamwork at the college level helped them as faculty to continue their efforts, often supported by the administration. In conclusion, the importance of faculty partnership as well as a continuous support system for faculty in adapting a new technology will be discussed.
The New Marketing Realities and the Major Marketing Forces
Authors: Mandal Pratap Chandra
Published: March 2023

Companies and businesses operate in a competitive environment. Market forces are shaping new marketing realities for companies. The objective of the study is to conduct an analysis of the various aspects of the market forces viz. technology, globalization, physical environment, and social responsibility, and how these forces are shaping the new marketing realities. The methodology adopted is a conceptual analysis of the various aspects of the market forces and the new marketing realities. Companies adopt initiatives and strategies to convert the challenges into opportunities. Academicians may analyze and suggest effective ways to understand the market forces and the new marketing realities. Companies and practicing managers may analyze how the market forces are shaping the marketing realities and the marketing landscape. They should adopt strategies and initiatives which help them to achieve business excellence in the long run.
Effect of Non-Functional Polyorganosiloxane Additives on the Hydrophysical Properties of Cement Systems
Authors: Vavrenyuk S.V. , Vavrenyuk V.G. , Kuznetsov N.V.
Published: March 2023

A research on the influence of non-functional organosilicon compounds (OSC) - polyorganosiloxanes on the hydrophysical properties of cement systems has been carried out. Two groups of polyorganosiloxanes with the most typical structure (linear, cyclolinear, and three-dimensional) have been studied: polyorganylsilsesquioxanes and polydiorganylsiloxanes. Within the group of polyorganylsilsesquioxanes the polyphenylsiloxane (PPS) and polyvinylsiloxane (PVS) differing in the type of radical and degree of structure completion were studied. Within the group of polydiorganylsiloxanes the polydimethylsiloxane liquid (PMS-6) and dimethylsiloxane rubber (SKTN) differing in molecular weight were studied.It has been established that non-functional organosilicon compounds (polydiorganylsiloxanes, polyorganylsilsesquioxanes) are able to hydrophobize the cement systems when introduced by the method of mechanical activation. At the same time, SKTN is a powerful agent for efflorescence formation, preventing the removal of calcium hydroxide Ca (OH)2 out of the cement stone.
Preparation of Wood Filler for Arbolite
Authors: Lukutsova N.P. , Pykin A.A. , Artamonova E.G. , Chernyshev O.N.
Published: March 2023

The effect of treating the wood filler of freshly cut wood species with the additive of silica sol obtained by the polycondensation method on the arbolite properties is studied. It was found by X-ray fluorescence spectroscopy that silica sol particles with the sizes of 20 to 80 nm are adsorbed on the surface of the wood filler, obstructing open pores and spaces between the wood vasculars. The most effective is the additive of silica sol with its content from 10 to 20%. It is shown by the a multilayer map of energy-dispersive X-ray spectroscopy of a wood particle treated with silica sol that calcium cations accumulate on the wood filler in the arbolite mix, thus affecting the hydration of the cementing material and the arbolite strength. After 3 and 28 days of hardening, the strength of the arbolite with the birch chips increases by 2.5-2.7 and 2.7-3.1 times, respectively; with the aspen chips its strength becomes 3.1-4.2 times higher; and the arbolite strength rises 3.1-4.2 times with birch and pine chips (1:1). The method for treating the wood filler with silica sol patented by the authors makes it possible to simplify the technology of its preparation, to reduce the exposure time of wood filler before mixing with a cementing material and to produce arbolite from freshly cut birch wood with the strength after 3 and 28 days of hardening being 2.5-2.7 and 2.7-3.1 times higher than that of the control composition.
Oxide Film Formation on Stainless Steel 304L by Anodizing Method with Different Power Sources
Authors: Azmi Nur Suhaily , Derman Mohd Nazree B. , Che Daud Zuraidawani
Published: March 2023

In order to generate a nanoporous oxide film, stainless steel 304L is anodized using an alternating current (AC) and direct current (DC) source in an ethylene glycol solution containing ammonium fluoride, NH4F, and water, H2O. This study focuses on the differences between AC and DC anodizing in terms of current density versus time response, thickness, and depth of the oxide film formed on the anodized specimens, surface roughness, and element composition of the specimens because there is limited study on AC anodizing of stainless steel. In 0.5% 0.3M NH4F and 3% H2O in a glycol solution, the AC and DC anodizing is conducted for 30 minutes at voltages ranging from 30 V to 50 V and 21.2 V to 35.4 V, respectively. The current density versus time response revealed that AC anodizing produced more current density than DC anodizing. As for the thickness and depth of the generated oxide films, only the specimens that had been anodized in AC indicated an increase in these films, whereas specimens that had been anodized in DC showed the metal dissolving as the specimens degraded. The surface roughness of AC anodized specimens reduced with increasing anodizing voltage, whereas DC anodized specimens increased with increasing anodizing voltage. The element composition of the anodized specimens revealed that the mass percentage of oxygen, O element is higher for AC anodized specimens compared to DC specimens. This suggests that AC anodizing on stainless steel might offer important advantages and should be further researched.
Plywood for Construction Purposes on a Phenol-Formaldehyde Binder Modified with Hydrogen Peroxide
Authors: Vachnina T.N. , Fedotov A.A. , Susoeva I.V. , Deryugin V.I.
Published: March 2023

Reducing the pressing temperature of plywood on the FF binder allows you to reduce its cost, but at the same time, the physical and mechanical characteristics of plywood deteriorate. Modification of the phenol-formaldehyde binder with hydrogen peroxide reduces the curing time of the phenolic binder, the pressing temperature of the FSF plywood, and improves the physical and mechanical properties of the FSF plywood. Regression models have been developed for dependence of the plywood strength during cleavage along the adhesive seam, strength during static bending, and thickness swelling after 24 hours in water on the factors varied in the experiment – the proportion of hydrogen peroxide addition and the pressing temperature. The IR spectra of plywood allow us to estimate the effect of H2O2 on the bonds involved in the structure formation of material. With the addition of hydrogen peroxide, the number of active methylene groups decreases, which indicates an increase in degree curing of modified binder.
Safety and Reliability of Concrete Components in Water Supply and Disposal
Authors: Vasilieva Ye.V. , Fedorov V.M.
Published: March 2023

Water supply and disposal systems make an important part of the social vital activities. The operation features, reliability and longevity of water supply and disposal components made of concrete, mostly depend on the quality of concrete fillers taking up to 80% of the concrete volume and significantly affecting its properties. At the plants or construction sites the negative impact of such fillers is compensated by the increase in cement gaging which is not desirable. That is why, for the sake of cement stretch-out the authors suggest adding a dusty component to the conventional components of concrete mix. Along with improving the prefabricated unit quality and savings in the construction, the use of ash and expanded clay dust increases the utilization of this industrial waste, reduces the cost of maintaining ash and expanded clay dumps, and contributes to the protection of the environment from pollution.
Application of Composite Filament with the Addition of Metallic Powders in 3D Printing
Authors: Dzindziora Agnieszka , Sulowski Maciej , Dzienniak Damian
Published: March 2023

The aim of this experimental research was to 3D-print a filament based on PLA plastic with a metallic powder. The filament contained approximately 80 – 90 % of copper powder. The base component of the filament is thermoplastic PLA, a polymer belonging to the group of aliphatic polyesters. Composites based on PLA and powders have different properties from traditional PLA filaments without admixtures. The created composite structure is intended for 3D printing with the FDM (Fused Deposition Modeling) technology, using rapid prototyping. The printed samples were subjected to the sintering process. The fractures of the sintered samples were SEM and EDS analyzed.
Formation of Alpha-Case Layer during Oxidation of Ti6Al4V Surface by Annealing at 1050 °C and Change of Microstructure after Different Cooling Rates
Authors: Belan Juraj , Uhríčik Milan , Kuchariková Lenka , Tillová Eva , Pastierovičová Lucia
Published: March 2023

The two-phase titanium alloy Ti6Al4V (often referred to as GRADE 5 or Ti64) is currently probably the most widely used type of Ti alloy. It is characterized by an excellent combination of strength - toughness - chemical stability. However, at temperatures above 500 - 800 °C it is prone to the diffusion of oxygen into surface layers, where the increased oxygen content creates the so-called “alpha-case” layer. The formation of this layer is associated with a reduction mainly in the deformation characteristics of the alloy. The paper focuses on the metallographic analysis of the "alpha-case" layer after annealing at 1050 °C with a holding time of 3 hours and cooling at different cooling rates (500 °C/s, 1 °C/s and 0.08 °C/s). Microstructure changes were observed by light microscopy using polarized light – PL, dark field – DF and phases were identified by SEM methods. The influence of changes in the microstructure on the mechanical properties was determined by measuring the microhardness HV0.2 /10 (STN EN ISO 6507) with Zwick / Roell ZHµ and measuring the resistance to impact stress KU (Charpy system STN EN 10045-1). Based on the microhardness measurement, an increase in the microhardness of the surface layers was observed at all cooling rates and at the same time, a decrease in the impact resistance was observed compared to the initial state.
Analysis and Optimization of Machinability of Al2O3 and Fly Ash Reinforced Aluminum Hybrid Composites Using Carbide Inserts
Authors: Veeranaath V. , Faiyaz Mobashir , Shankar Ravi
Published: March 2023

Aluminum matrix hybrid composites reveal excellent mechanical behavior compared to traditional materials for a wide range of conditions and applications. However, the machining of this kind of composite is a challenging job due to its improved mechanical hardness. The problems faced during the cutting of these composites are increased machining forces, poor surface quality, and increased tool wear. Many types of research are still in progress across the world to overcome these issues by using a variety of inserts and processing constraints. So, this paper is mainly focused on the study of the machinability of aluminum hybrid composites. The composites are synthesized by employing stir casting via varying the filler content, stirring duration, and speed. The fabricated composites are machined using coated and uncoated carbide inserts. Machining forces, surface roughness, and insert wear are assessed to learn the machinability of these materials by varying the machining constraints. Taguchi analysis was employed to assess the effect of the constraints on the retorts. Keywords. Aluminum Hybrid Composites, Stir Casting, Machinability, Taguchi Analysis.
Consumer Attitudes towards Organic Food Consumption: Focus Group Discussion in Colombo District, Sri Lanka
Authors: Jayawardena H. N. , Wijesundara W. G. S. R.
Published: March 2023

Gastronomic tourism is a rapidly growing segment in the hospitality industry with great potential. Amongst, organic foods gained a rapid attention from consumers due to its use of carbonic fertilizers and inherited special food qualities. But, contradictory ideas in the literature were explored regarding consumer behavior on organic and conventional food consumptions in Sri Lanka. Hence, the objective of the study aims to investigate the consumer attitudes and knowledge about organic foods during consumption. Given the qualitative nature of the issue, primary data were collected through focus group discussions. Through qualitative content analysis the findings revealed consumers are generally conscious about the use of chemicals and environmental impact of food production. As per, the consumers are knowledgeable and being patient for the extremely high prices of organic food materials due to its inaccessibility. Respectively, the implications mainly focus on enhancing government’s involvement to stabilize organic supply chains in urban areas.
Impact of Experiential Marketing on Destination Image towards Sri Lankan Tourism with the mediating effect of Destination Trust
Authors: Chandrasiri L. M. P. , Wijesundara Bimali
Published: March 2023

The purpose of this study is to determine “whether the foreign tourists will perceive Sri Lanka as one the best destinations in the world with the experiential marketing and destination trust.” This study employed a quantitative research design to conduct the research. The population of this study was the people who recently visited Sri Lanka. The convenience sampling method was used to select the study sample, and 212 respondents were selected accordingly. Through conducting an online survey, data was gathered using a structured questionnaire to measure the study's main concepts. The results state that; “there is a significant relationship between experiential marketing and destination image and destination trust mediates the relationship.”. The research's main limitations where this questionnaire was distributed on the online platform only where there was a high possibility of neglecting the questionnaire. As suggestions for further research, the researcher suggests focusing on how high-end tourists perceive Sri Lanka as a destination, the pitfalls of Sri Lankan tourism, and reasons for lesser arrivals of high-end tourists to Sri Lanka. Following relevant precautions to avoid the virus in upcoming times and letting them feel secure is essential. This research study identified that destination trust is the most significant factor with the highest coefficient value. By engaging in numerous marketing and promotional activities to attract global high-end visitors, and positioning the island as the world's most trusted destination.
Application of Big Data Analytics in Telecommunication Sector Company in Sri Lanka: with Reference to Marketing Perspective
Authors: Senavirathne R. T.
Published: March 2023

The business world is getting competitive and complex day by day. The customer needs and expectations also changing rapidly. Therefore, making effective strategic marketing decisions in a short time is essential to hold a competitive advantage. Especially in the telecommunication sector, there are lots of data to be handled every day. By analyzing all those data and extracting the most critical insights and use those insights for strategic marketing decisions is essential to remain as the market leader. Today, Big Data Analytics is used to analyses massive databases and find patterns and extract valuable information and insights. Therefore, this research investigates on strategic marketing decisions, Big Data Analytics and how Big Data Analytics use in telecommunication sector to make strategic marketing decisions. Moreover, this research examines how Big Data Analytics can be applied to perform customer segmentation based on Psychographic segmentation by analyzing URLs using artificial neural network techniques. This study will provide suitable recommendations for the telecommunication companies to apply big data analytics to improve the revenue, and finally it points out the possible future study areas.
In vitro evaluation of the quality of obturation with capillary condensation technique and hybrid technique in teeth with simulated internal resorption cavity: A cone-beam computed tomography study
Authors: Sajjan Girija S , Naik K Durga Prasad , Varma K Madhu , Indukuri Sai Lakshmi Durga , Gajja Atchyut Kumar , Sindhuja B V
Published: March 2023

Aim:

The quality of obturation with recent capillary condensation technique and hybrid technique in teeth with artificial internal resorption cavity needs to be evaluated.

Methods:

Calculation of sample size was done with G*Power software (version 3.1.9.4) (effect size d = 1.46). Eighteen single-canal mandibular premolars were decoronated at the cementoenamel junction for standardization of specimen length as 12 mm. Biomechanical preparation was done with ProTaper Universal rotary file up to F4. Internal resorption cavity was prepared with #08 size round bur 6 mm from the apex. Samples were distributed randomly into two groups. Group I: teeth with bioceramic sealer (EndoSequence BC Sealer, Brasseler, USA) application using conventional technique and hybrid technique of obturation. Group II: capillary condensation technique of bioceramic sealer (EndoSequence BC Sealer, Brasseler USA) using single-cone gutta-percha obturation. The voids in three segments of the root canal were measured with cone-beam computed tomography using “OnDemand3D App” software. Data were statistically analyzed by one-way analysis of variance (ANOVA) and multiple comparisons of Tukey honestly significant difference tests with P < 0.05.

Results:

The mean area of the void was 0.3963 ± 0.3299 mm2 for Group I and 0.4022 ± 0.4101 mm2 for Group II. There was a difference in the number of voids present in different sections of the root within a group with significance but not between the groups.

Conclusion:

Capillary condensation technique with single-cone obturation is comparable to conventional sealer application and hybrid technique of obturation for filling internal resorption cavity.
Comparative evaluation of push-out bond strength of single and multiple fiber-reinforced posts cemented with dual-cure resin cement using different adhesive strategies: An in vitro study
Authors: Prashant P Moogi , Sonawane Asmita Ashok , Siddhesh D Bandekar , Shirin P Kshirsagar , Kalyani I Ahirrao , Tryambake R Pavan
Published: March 2023

Aims:

The aim of the present study was to evaluate and compare the push-out bond strength of single and multiple fiber-reinforced posts cemented with dual-cure resin cement using total-etch and self-etch adhesive systems.

Methods:

Sixty single-rooted maxillary permanent incisors were decoronated and endodontically treated. Following post space preparations, the roots were divided into four groups (n = 15); Group 1: single fiber-reinforced composite post with the total-etching agent, Group 2: single fiber-reinforced composite post with the self-etching agent, Group 3: multiple pin posts with the total-etching agent, and Group 4: multiple pin posts with the self-etching agent and then cemented using dual-cure resin cement. The samples were then sectioned to obtain approximately 2-mm disks, and a push-out test was performed. Data obtained were statistically analyzed using analysis of variance, post hoc Tukey, and unpaired t-test.

Results:

The mean push-out bond strength values showed that Group 3 had significantly higher bond strength as compared to the other groups (P < 0.05).

Conclusions:

Dentapreg multiple pin posts with total-etching agents resulted in higher push-out bond strength as compared to single fiber-reinforced posts and self-etching agents.
Foramen Magnum as a Tool for Sexual Dimorphism
Authors: Kattimani Ashokkumar , Swetha K , Bhayya Harsha , Kardalkar Shruti B.
Published: March 2023

Background:

Gender determination by skeletal relies predominantly on the skeletal radiology. Foramen magnum is in a favorable anatomic position, protected by soft tissue and skeleton of the head protecting the area for forensic examination. Foramen magnum being a relatively indestructible structure becomes an important tool in identification of gender.

Objective:

To study the vagueness and reliability of the foramen magnum (FM) in gender classification through the use of reconstructed computed tomography (CT) images.

Materials and Method:

A total of 200 patients (100 males and 100 females; age range, 18–60 years) were selected for the study. The FM measurements (sagittal, transverse, circumference, and area) were obtained from reformatted axial sections using a CT scan.

Results:

It was found that the mean FM sagittal diameter was 35.09 ± 2.48 mm, the FM transverse diameter was 28.76 ± 2.82 mm, the FM circumference was 110.56 ± 8.84 mm, and the FM area was 746.20 ± 108.47 mm2. According to Student’s t-test results, in all measured parameters, there was a significant difference between the genders (P < 0.001).

Conclusion:

In all of the measured variables, there is a statistically significant difference present in the mean values of various parameters between both genders, with males having higher dimensions than female, indicative of sexual dimorphism.
Mucormycosis in a Covid-19 Pandemic
Authors: Sailaja Sambhana , Shil Malabika , Lavanya Reddy , Thomas Delphia , Kondoj Navyasree , Komanduri Sowmya
Published: March 2023

Background:

Mucormycosis is a potentially lethal fungal infection, and the risk of secondary infections is more in patients with COVID-19. This may be because of pre-existing comorbidities or the immunosuppressive treatment taken during the COVID-19 infection. Early diagnosis is of utmost importance for patient survival.

Aims and Objectives:

This study was designed to grade the patients of rhino-orbital-maxillary mucormycosis in post-COVID-19 patients in a structured way based on the symptoms and clinical and radiographic findings and to find a correlation with various predisposing factors.

Materials and Methods:

A total of 102 patients with confirmed rhino-orbital-maxillary mucormycosis and a history of COVID-19 recovery, who understand the protocol and can give informed consent, were included in the study.

Results:

In the present study, 73.5% were found to be males and 26.5% were found to be females. The 31–40 age group was more affected among males, and the 41–50 age group was among females. The most common associated comorbidity was found to be uncontrolled diabetes mellitus. Out of 102 patients, 53.9% patients reported being in grade II, followed by 33.3% in grade III, and 12.7% in grade I.

Conclusion:

The grading system of rhino-orbital-maxillary mucormycosis was found to be significant; hence, it can be used for the early diagnosis and prevention of severe consequences.
Assessment of Frontal Sinus, Maxillary Sinus Dimensions, and Nasal Septal Pattern in Gender Determination
Authors: Jan Syeda Muskan , Pachipulusu Balaji , Govindraju Poornima
Published: March 2023

Background:

Frontal sinus pattern is unique for each individual which has made it an important tool in forensic sciences. The dimensions of the maxillary sinus also tend to stabilize after puberty and remain intact when skull bones are poorly disfigured. These sinuses exhibit different dimensions among male and female subjects. Nasal septum patterns can be utilized as a tool.

Aims and Objective:

The present study is intended to determine the sexual dimorphism with dimensions of the frontal sinus, maxillary sinus, and nasal septum pattern by cone beam computed topography.

Materials and Method:

The study subject consisted of 100 images of CBCT images which were collected from the database retrospectively. The obtained data were statistically analyzed.

Results:

The parameters were higher in male in comparison to female subjects. The length, height of the maxillary sinus, and frontal sinus width showed statistically significant results. The deviated nasal septum was not statistically significant.

Conclusion:

The maxillary sinus and frontal sinus are utilized for personal identification and gender determination with the nasal septum as an adjuvant tool.
Cysteamine Hydrochloride, a Transglutaminase2 Inhibitor as Therapeutic Potential for Oral Submucous Fibrosis
Authors: Rajarathnam Basetty N. , Rakesh Nagaraju , Murali Anita , Anbu J , Asha M. L.
Published: March 2023

Background:

Submucous fibrosis (SMF) was recognized as a definitive lesion by Schwartz who described it as a fibrosing condition in 1952 and due to its predilection for afflicting multiple sites in the oral cavity the disorder was listed as a “premalignant/precancerous condition”. Tissue transglutaminase 2 (TG2) catalyzes the cross-linkage between glutamine (Gln) and lysine (Lys) side chains. Cysteamine by virtue of being a transglutaminase 2 substrate, acts as a competitive inhibitor of the other amine substrates of this enzyme. In-vitro studies have reported the existence of a correlation between TG2 and SMF.

Aim:

The present study was carried out to evaluate Transglutaminase2 (TG2) and its therapeutic intervention by cysteamine hydrochloride in SMF-affected Wistar rats.

Methods:

The present experimental study was carried out on male Wistar rats, in which arecoline was injected into the right buccal mucosa for induction of SMF, and levels of TG2 were estimated using ELISA. The drug was administered to disease-induced Wistar rats from the 91st day for inhibition of TG2 and the post-treatment levels of TG2 were evaluated by ELISA at three regular intervals (97th, 104th, 111th days).

Results:

The Animal model exhibited a successful induction of SMF similar to the histopathological features of human SMF. The levels of TG2 were significantly elevated in the experimental animals compared with the healthy animal group up on the induction of the disease process. On administration of cysteamine to the SMF-affected animals, TG2 levels significant reduction by the 111st day was observed.

Conclusion:

The results from this present study highlight the newer therapeutic option for SMF. Exploring the old drug cysteamine can be a significant forward step towards novel treatment strategies for the treatment of SMF.
Modified Decompression Technique in the Management of Odontogenic Cystic Lesions
Authors: Batchu Pavan K. , Bandyopadhyay Tapas K. , Devi Vuyyuru V. , Mukundapriya A.
Published: March 2023

Introduction:

Odontogenic cystic lesions requiring conservative management were treated with a novel technique of modified decompression and assessed.

Aims and Objective:

This study aimed to evaluate the resolution of the lesion, recurrence, and complications in patients treated with the novel modified decompression technique.

Materials and Methods:

The retrospective study included patients treated with the novel modified decompression technique between 2004 and 2022. The cystic lesions were packed with chlorhexidine acetate gauze dressing (Bactigras), and patients were prescribed a combination of Calcium, Vitamin C, and Vitamin D. Pack was changed periodically until a reduction of at least 80% in the volume of the lesion was achieved. Period of decompression, volume at each follow-up, and lesion size were recorded. In addition, inter-group significance co-relating the size and diagnosis of the lesions with the rate and duration of healing were derived by ANOVA test.

Results:

OKC, unicystic ameloblastoma, and dentigerous cysts were included, and the follow-up period ranged from one year to eighteen years. 25 cases (83.33%) showed full resolution, whereas five cases (16.17%) showed more than 80% resolution. The period of decompression and the rate of decompression was found to correlate with both the diagnosis and the size of the lesion.

Conclusions:

The modified decompression technique is superior to traditional decompression with a high rate of resolution of cystic lesions and no recurrence over a long follow-up period.
Cavernous Hemangioma of Maxilla
Authors: Aditya Amita P. , Patil Shruti A. , Kore Antara A , Sawant Vaishnavi S.
Published: March 2023

Intra-osseous vascular lesions occur rarely in jaw bones. Intra-osseous hemangioma of the facial bones is even rarer and occurs more predominantly in the mandible than the maxilla. Diagnosis of these lesions is challenging due to inconsistent clinical and radiographic presentation. Here, we present a rare case report of a boy, aged 16 years, with an intra-osseous cavernous hemangioma of the left maxilla.
Allergic Contact Stomatitis from Homeopathic Preparations (Arsenicum Album 30c) Used as Prophylaxis Against COVID 19
Authors: Sanjay CJ , Patil Karthikeya , Viveka S , Doggalli Nagabhushana
Published: March 2023

Contact stomatitis or stomatitis venenata is defined as an oral mucosa contact allergy caused by persistent contact with a pathogenic substance. Arsenic album 30 was advised as a “preventive and prophylactic remedy” against coronavirus disease-19 (COVID-19) by The Ministry of AYUSH (Ayurveda, Yoga and Naturopathy, Unani, Siddha, and Homeopathy), Government of India. We present a case of a 68-year-old man who suffered ulcers on the left buccal mucosa and tongue after taking arsenic album 30c for 10 days sublingually. This is, to the best of our knowledge, the first recorded incidence of allergic contact stomatitis caused by a homeopathic drug used to treat COVID-19. This case report emphasizes the need for obtaining a history, being aware of the composition of any new items, and reporting allergies or medicines provided to the patient.
Smartagb: Aboveground Biomass Estimation of Sorghum Based on Spatial Resolution, Machine Learning and Vegetation Index
Authors: Liu Qi , Wang Yaxin , Yang Jie , Zhang Wuping , Wang Huanchen , Li Fuzhong , Wang Guofang , Huo Yuansen , Han Jiwan
Published: March 2023

This work aims to explore the feasibility of predicting and estimating the aboveground biomass (AGB) of sorghum using multispectral images captured by UAVs, and clarify the quantitative relationship between vegetation index and sorghum AGB based on different spatial resolutions, and build an AGB estimation model based on UAV multispectral images and vegetation index under different spatial resolutions. Combining spatial resolution, vegetation index, and machine learning, a training set is used to train the model, and a verification set is used to verify the model to select the best prediction model corresponding to different spatial resolutions. The three best prediction models under three spatial resolutions are classic machine learning models. 1) when the spatial resolution is 0.017m, the model precision obtained from the random forest is R2=0.8961, MAE=26.4340, and RMSE=32.2459. 2) when the spatial resolution is 0.024m, the model accuracy obtained by the Lasso algorithm is R2=0.8826, MAE=31.106, and RMSE=40.2937; 3) when the spatial resolution is 0.030m, the model accuracy obtained by the decision tree algorithm is R2=0.8568, MAE=30.3373, and RMSE=40.8082; and 4) the model's accuracy decreases with the decrease of spatial resolution. The results show that the combination of spatial resolution, vegetation index, and machine learning algorithm is an effective, fast, and accurate prediction method.
Intelligent Reflecting Surface Aided Secure Communication with Federated Learning
Authors: Lu Bowen , Lai Shiwei , Tang Yajuan , Cui Tao , Fan Chengyuan , Ou Jianghong , Fan Dahua
Published: March 2023

Applying federated learning into the covert communication can not only ensure the communication reliability, but also reduce the probability of enemy detection. The use of airspace resources is an effective way to achieve covert communication. However, most of the existing works on the airspace covert communication represented by MIMO need to adapt to the channel state and cannot improve the channel, resulting in the performance bottleneck of covert communication. The intelligent reflective surface (IRS) provides a new perspective for the covert communication by flexibly adjusting the reflection phase shift of the incident signal and intelligently configuring the wireless channel. However, the potential of IRS in the covert communication is far from being fully exploited. To solve this issue, this paper firstly performs a comprehensive literature review on the secure communication with the aid of federated learning, and then gives some challenges on the secure communication in poor channel state. In further, this paper provides some solutions to the challenges on the secure communication, where some results are provided to show the advantages. The research results have important theoretical and practical significance for forming a new research paradigm of airspace intelligent and controllable covert communication and promoting the application and popularization of covert communication in various fields of security.
Augmentation of Predictive Competence of Non-Small Cell Lung Cancer Datasets through Feature Pre-Processing Techniques
Authors: Sumalatha M. , Parthiban Latha
Published: March 2023

The major Objective of the Study is to augment the predictive analytics of Non-Small Cell Lung Cancer (NSCLC) datasets with Feature Pre-Processing (FPP) technique in three stages viz. Remove base errors with common analytics on emptiness or non-numerical or missing values in the dataset, remove repeated features through regression analysis and eliminate irrelevant features through clustering methods. The FPP Model is validated using classifiers like simple and complex Tree, Linear and Gaussian SVM, Weighted KNN and Boosted Trees in terms of accuracy, sensitivity, specificity, kappa, positive and negative likelihood. The result showed that the NSCLC dataset formed after FPP outperformed the raw NSCLC dataset in all performance levels and showed good augmentation in predictive analytics of NSCLC datasets. The research proved that preprocessing is essential for better prediction of complex medical datasets.