bluuebunny/crossref_metadata_2025 huggingface dataset:
BITCOIN İLE BORSA ENDEKSLERİ İLİŞKİSİ: YÜKSELEN PİYASA EKONOMİLERİ İÇİN PANEL VERİ ANALİZİ UYGULAMASI
Authors: MAMEDOV Namık , KOÇ Selçuk
Published: March 2023

2007 yılında ABD`de başlayan `Mortgage Krizi` çok geçmeden bütün dünya ekonomisini 2008 yılında etkisi altına almıştır. Ülke ekonomilerinde oluşan kriz, finansal piyasalarda çöküş ve dijital ortamlarda gelişmeler sonucunda 2009 yılında ilk kripto para birimi olan Bitcoin’in ön plana çıkmasına yol açmıştır. Günümüzde yüksek piyasa değerine sahip olması, merkezi yönetim sisteminin olmaması, anonimliği ve sağladığı birçok avantajlar bakımından dikkatleri üzerine çekmiş ve geleneksel yatırım araçlarına rakip olup olmaması her zaman tartışma konusu olmuştur. Bu yüzden araştırmacılar tarafından Bitcoin ile ilgili farklı yaklaşımlar ve yöntemler kullanılarak çalışmalar yapılmıştır. Bu çalışmanın temel amacı Bitcoin fiyatı ile Yükselen Piyasa Ekonomileri`nin borsa endeksleri ve diğer önemli değişkenler arasında ilişkinin boyutu ve yönünün belirlenmesidir. Ayrıca Bitcoin`in geleneksel yatırım araçlarına alternatif mi yoksa bir balon mu olduğunu belirlemek amaçlanmıştır. Uygulanan testler sonucunda bazı Yükselen Piyasa Ekonomileri ülkelerinde Bitcoin ile borsa endeksleri ve diğer değişkenler arasında istatistiksel olarak anlamlı ilişki bulunmuştur ve o ülkeler için Bitcoin`in alternatif yatırım aracı olduğu sonucuna ulaşılmıştır.
DÖRDÜZ AÇIK HİPOTEZİ: TÜRKİYE EKONOMİSİ ÜZERİNE BİR ANALİZ
Authors: ÖZBAY Ezgi , İPEK Evren
Published: March 2023

Bu çalışma, dördüz açık hipotezinin geçerliliğini Türkiye ekonomisi için ampirik olarak değerlendirmeyi amaçlamaktadır. Uygulanması tercih edilen yöntemler sınır testi, ARDL modeli, Toda-Yamamoto nedensellik sınaması olmaktadır. Analizler, 2006:1-2022:1 döneminin çeyrek dönemlik verileriyle gerçekleştirilmiştir. Ampirik bulgular değişkenlerin eşbütünleşik olduğunu göstermektedir. ARDL Modellerinin uzun dönem katsayıları, cari açık değişkeni üzerinde bütçe açığının pozitif yönlü, çıktı açığının negatif yönlü etkileri olduğunu ortaya koymuştur. Tasarruf yatırım açığının cari açık üzerindeki uzun dönem etkisi anlamsız olarak bulunurken kısa dönemli etkisinin anlamlı ve pozitif yönlü olduğu tespit edilmiştir. İlaveten, çıktı açığı üzerinde bütçe açığının ve tasarruf yatırım açığının pozitif yönlü, cari açığın ise negatif yönlü etkileri olduğu bulgusuna erişilmiştir. Tasarruf yatırım açığının kısa dönemde de çıktı açığını pozitif yönde etkilediği görülmüştür. Nedensellik sınaması bulgularına göre; çıktı açığı değişkeni bütçe açığıyla, cari açıkla ve tasarruf yatırım açığıyla istatistiksel olarak anlamlı şekilde iki yönlü nedensellik ilişkisi sergilemektedir. İlaveten, cari açığın da bütçe açığıyla ve tasarruf yatırım açığıyla iki taraflı nedensellik ilişkisinde bulunduğu sonucuna erişilmiştir. Bütçe açığıyla tasarruf yatırım açığı arasındaki tek yönlü nedenselliğin yönü ise bütçe açığı değişkenine doğrudur.
GENDER BIAS IN WORKPLACES: A SCOPING REVIEW OF THE FACTORS LEADING THE GENDER BIAS
Authors: KARAKAPLAN ÖZER Emine
Published: March 2023

At workplaces gender is an issue with complex dynamics that has long been studied and discussed. The underrepresentation of women at workplaces, especially in senior positions, is a noteworthy problem. Identifying the underlying causes of this underrepresentation is essential to break the barriers. The aim of this study is to uncover the factors leading the main gender biases in workplaces. For this aim, Conceptual Framework of Arksey & O'Malley (2005) on scoping review methodology was used. In this study, papers indexed in Web of Science and Scopus databases between 2010 and 2022 were examined. Eligible papers were identified and selected with PRISMA guidelines. The results of the study show that in workplaces predominantly women are exposed to biases and factors leading these biases can be grouped under seven headings. These are motherhood/caring, work/family balance, skill/ competence, wage, sensitiveness/emotionality, culture, and physical appearance/ clothing.
Needs for a Family Pharmacy and Expected Family Pharmacy Services
Authors:   The Pharmaceutical Society Of Korea, Lee Joo Hyun , Kim Hye-Lin , Han Hye Sung , Park Il-Ho , Sohn Hyun Soon
Published: March 2023

We wanted to examine people’s demands for a family pharmacy and expected services. We conducted webbased survey and recruited subjects by convenience sampling method. This cross-sectional survey, a 24-item questionnaire, inquired about subjective health problems, pharmacy use, desire to designate one's own family pharmacy, and decision considerations. The Mann-Whitney test, Kruskal-Wallis test, and logistic regression were used to detect these components. 68.8% of the 449 respondents were willing to name their family pharmacy. 89.9, 82.7, 81.3, and 78.6% of respondents agreed that a proximity to home, proximity to the medical institution they usually attend, good setting for counseling, and storage of a wide variety of medications were important pharmacy characteristics when choosing a family pharmacy. 93.3, 93.1, and 88.9% of respondents, respectively, evaluated a conscience, professionalism in pharmaceutical care, and counseling ability as essential pharmacist qualities. Regarding expected service from a family pharmacy, 52.8, 38.8, and 39.4% of respondents highly agreed on a comprehensive medication review, overall health-related counseling, and resolving queries regarding medicines or dietary supplements, respectively. Koreans generally want a family pharmacy, especially women and middle-aged people. To provide services, customers expect answers to various queries concerning medications; therefore, it is vital to be a highly conscientious and professional pharmacist and to create an environment conducive to counseling.
Comparison of Social Skills of Nursing Students from Two Universities of Lima
Authors: Perez-Siguas Rosa , Matta-Solis Hernan , Millones-Gomez Segundo , Matta-Perez Hernan , Cruzata-Martinez Alejando , Meneses-Claudio Brian
Published: March 2023

Social competences in nursing students refers to the set of behaviors or abilities acquired by the nursing student, but they do not fully demonstrate or express their skills or competences, opinions for fear of negative comments and/or if it is correct or not. Finally, the students put their social skills into practice in each situation they face every day, therefore the research objective is to compare the social skills of nursing students from two universities in Lima. It is a quantitative, non-experimental, descriptive, and cross-sectional study, with a total population of 487 nursing students from two universities in Lima, who answered a questionnaire on sociodemographic aspects and the Gismero Social Skills Scale of 33 items. In the results, we observe that the total of nursing students from both Lima universities, 210 (43.1%) of the nursing students present high social skills and 277 (56.9%) present medium social skills. It is concluded that students demonstrate their social skills that they will later do in the workplace, so it is necessary to implement subjects on social skills that generate mental strengthening in students.
Management of an Automatic System to Generate Reports on the Attendance Control of Teachers in a Educational Center
Authors: Perez-Siguas Rosa , Matta-Solis Hernan , Matta-Solis Eduardo , Matta-Perez Hernan , Cruzata-Martinez Alejando , Meneses-Claudio Brian
Published: March 2023

Many countries were affected by the appearance of SARS-COV-2 that was spreading rapidly, causing damage to humanity and causing a global crisis, this generated a generalized quarantine to avoid the physical approaches recommended by the health system, affecting all students in the world, since it was wanted to avoid forming foci of contagion in educational centers,  for this reason, some automated systems that are marketed in the markets were applied to combat the pandemic in educational centers, but they are inefficient when registering the work attendance of teachers, causing loss of time in the registration process and causing an agglomeration of people due to the failure in the registration process,  in addition to not allowing to manage the reports of the teacher's work attendance. In view of this problem, in this article the management of an automatic system was carried out to generate reports on the attendance control of the teaching staff in the educational center and control the working hours of each teacher to be visualized through a user interface, being able to control the labor discipline of each teacher since all the records will be stored in a database. Through the development of the system, it was observed that the system works effectively since an efficiency of 98.87% was obtained in its operation to control the time of entry and exit of each teacher, being an accepted value since the process is conducted safely.
Student Engagement Prediction in Online Session
Authors: Sashank Y. Trilochan , Kakulapati V. , Bhutada Sunil
Published: March 2023

The individuals who make up the globe constantly advance into the future and improve both their personal lives and the conditions in which they live. One ‘s education is the basis of one ‘s knowledge. Humans' education has a significant impact on their behavior and IQ. Through the use of diverse pedagogical techniques, instructors always play a part in changing students' ways of thinking and developing their social and cognitive abilities. However, getting students to participate in an online class is still difficult. In this study, we created an intelligent predictive system that aids instructors in anticipating students' levels of interest based on the information they learn in an online session and in motivating them through regular feedback. The level of students' engagement is divided into three tiers based on their online session activities (Not engaged, passively engaged, and actively engaged). The given data was subjected to the application of Decision Trees (DT), Random Forest Classifiers (RF), Logistic Regression (LR), and Long Short-Term Memory Networks are among the numerous machine learning approaches (LSTM). According to performance measurements, LSTM is the most accurate machine learning algorithm. The instructors can get in touch with the students and inspire them by improving their teaching approaches based on the results the system produces.
Auto Deep Learning-based Automated Surveillance Technique to Recognize the Activities in the Cyber-Physical System
Authors: Archana M. , Kavitha S. , Vathsala A.Vani
Published: March 2023

In recent days, the Internet of Things (IoT) plays a significant role and increasing in rapid usage in various applications. As IoT is being developed for cyber-physical systems in the specific domain of e-health care, military, etc. Based on real-time applications, security plays a vital role in certain activities in educational institutions. In the institutions, there are multiple videos are collected and stored in the data repositories. Those datasets are developed specifically for certain activities and no other datasets are developed for academic activities. As there is a large number of videos and images are collected and considered, advanced technologies like, deep learning and IoT are used to perform certain tasks. In this paper, a Auto Deep learning-based Automated Identification Framework (DLAIF) is proposed to consider and reconsider the activities based on image pre-processing, model can be trained through the proposed GMM model and then predication to make an effective surveillance process based on HMM. This proposed process makes to recognize the activities through EM and log Likelihood for cyber-physical systems. In the performance analysis, the proposed model efficiency can be determined through Accuracy detection, False Positive rate and F1 Score requirement. Then calculating the accuracy is more effective for the proposed model compared to other existing models such as BWMP and LATTE.
Atypical chronic active herpesvirus infections: Etiological structure, frequency of occurrence, clinical syndromes associated with them
Authors: Khalturina Evgeniya O. , Mironov Andrey Yu. , Suranova Tatiana G.
Published: March 2023

BACKGROUND: Every year, a steady, progressive increase in the number of atypical chronic, active forms of infections caused by herpesviruses is recorded. Diagnosing and selecting adequate therapeutic strategies for treating these infections present significant difficulties for physicians due to the polysyndromicity and many clinical manifestations.
AIMS: This study determines the prevalence of atypical chronic, active infections caused by herpesviruses among patients infected with herpesvirus infections and studies the etiological structural features and clinical manifestations/criteria and signs of atypically occurring chronic forms of herpes viral infections.
MATERIALS AND METHODS: Under our supervision at the Clinical and Diagnostic Center Medsi in Belorusskaya (Moscow), 98 patients of both sexes aged 23 to 60 years suffering from atypical chronic, active forms of infections caused by herpesviruses comprised the herpesviruses group. The comparison group consisted of 30 conditionally healthy subjects comparable in sex and age to patients. In addition to traditional methods (history collection, physical examination, general blood test, and others), serodiagnostic methods with ELISA were used to detect herpesvirus infections. ELISA was also used for detecting the genome of viruses in biomaterials. The study was approved by the ethics committee, and all patients received informed consent to participate in the study. Statistical analysis was performed using adequate methods.
RESULTS: The study of the etiological structure of herpesvirus infections in patients with atypical chronic, active forms of infections caused by herpesviruses, mixed herpesvirus infections were shown to occur in 83.4% of patients, and mono herpesvirus infections in 16.6% of cases. It was shown that the EpsteinBarr virus was the dominant virus among patients with mono and mixed herpesvirus infections. A high rate of EpsteinBarr virus DNA detection was demonstrated in saliva (84.2%), posterior pharyngeal wall scrapings (73.5%), tonsils (42.9%), urine (12.6%), and blood (8.3%) is a marker of the high replicative activity of the virus. The primary clinical syndromes associated with mono and mixed atypical chronic and active forms of infections caused by herpesviruses were identified.
CONCLUSIONS: This study identified and quantitatively assessed the viral load associated with the severity of the course and clinical manifestations of atypical chronic, active forms of infections caused by herpesviruses. Clarifying the features of clinical manifestations and syndromes in patients suffering from various mono and mixed herpesvirus infections will allow us to outline the goals for the further development of an adequate diagnostic algorithm for these atypical forms of herpesvirus infections and the concept of targeted, personalized etio- and immunopathogenetic therapy.
Smart Current Measurement in Modern Power Grids with a Raspberry Pi and GMR Effect-Based Sensor
Authors:   Department of Electrical and Electronic Engineering, Universidad de los Andes, Bogotá, Colombia, Ricci Alfredo , Celeita David , Ramos Gustavo
Published: March 2023

The Giant magnetoresistance (GMR) effect has been presented as a highly viable current measurement alternative in electrical systems due to its low cost, versatility and high precision. This paper shows how the GMR effect can be used in current measurement in smart grids. The study contributes to the construction of a current measurement prototype which works by using the GMR effect. Subsequently, a data storage and processing server is created using a Raspberry Pi. Finally, a graphical interface capable of real-time monitoring of the data acquired by the sensor is designed and implemented. Different tests were carried out successfully, showing not only the viability of the GMR sensor as a current meter, but also the possibility of using other tools as a complement in order to create a product of great utility in intelligent measurement of smart grids.
Machine Learning-Assisted OFDM-Based DSRC Communication Systems
Authors:   University of Transport and Communications, Hanoi, Vietnam, Huong Trinh Thi , Chien Trinh Van , Ha Do Viet
Published: March 2023

The automotive industry has developed Dedicated Short-Range Communication (DSRC) technology for specific Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication applications. However, the effectiveness of DSRC communication is highly dependent on other integrated standards for interoperability, which is still room for research, especially under high mobility. Deep learning has recently played a crucial role in boosting the system performance in 5G-and-beyond networks. This paper utilizes deep learning to improve the channel estimation quality of DSRC systems under time-variant and frequency-selective channels and applying a post filtering process to enhance the quality of reconstructed images. We consider an OFDM-based system where the propagation channels are roughly estimated at the receiver by a low-cost least squares method. Then, the channel estimation quality is enhanced by a data-driven approach exploiting supervised learning. Numerical results manifest the added benefits of deep learning for improving the channel estimation quality and boosting the Bit Error Ratio (BER) compared to the traditional estimation methods. Besides, a post-filter is necessary to remove artifacts and residual errors in recovered image data. Quantitatively, the support of deep learning improves the channel estimation quality by about 30%. At the same time, the post-filtering process enhances the reconstruction quality in terms of the Peak-Signal-to-Noise Ratio (PSNR) up to 4dB.
The Development of a Proposed Learning Management System for Senior High Schools in the Philippines
Authors:   the Cebu Technological University Main, Cebu City, Philippines, Santos Maria Salud M. Delos , Durano Dennis C. , Hortillosa Arlene D.
Published: March 2023

In the Philippines, one can find learning materials for various curriculum areas for all levels (Kindergarten up to Grade 10), which are already available online except for Grades 11 and Grade 12. This lack motivated the researchers to conduct the study that aimed to design and develop a learning management system (LMS) for senior high schools, specifically Grade 11, in selected regions in the Philippines. The study used the descriptive-survey method to acquire user requirements from 3072 stakeholders consisting of a cross-section of randomly sampled principals, teachers, and students. The researchers used the agile approach for the system development. The findings revealed that learning in senior high schools was done in large classrooms (according to the principals) that were not conducive to learning (as shared by the teachers). The students revealed that their teachers do not come to class prepared and do not make the lessons enjoyable. Based on the features desired by the principals, teachers, and students, an LMS is developed as the final output of the study. The study concludes that an LMS for senior high schools needs to be developed to make teaching and learning in senior high schools bearable, relevant, and ready for the Fourth Industrial Revolution. The study recommends evaluating the designed LMS regarding acceptability, functionality, and scalability.
An Exploration of FCM's Impact on Students' Perceptions of Support, Self-regulated Learning, and Critical Thinking
Authors: Sugrah Nurfatimah , Suyanta  , Wiyarsi Antuni
Published: March 2023

The flipped classroom model (FCM) has become a popular and most effective approach to implementing educational technology reforms. This study aims to 1) determine students’ perceptions of support, self-regulated learning, and critical thinking skills in interventions using FCM; 2) determine the relationship between students’ perceptions of support, self-regulated learning, and critical thinking skills; and 3) determine students’ general perceptions of FCM learning. This type of research is quantitative with a pre-experimental design, One-Shot Case Study. The data analysis technique used is descriptive data analysis and correlation analysis. Results showed that first the quantitative descriptive results showed that students’ critical thinking skills, SRL, and perceptions of support were quite good after being given the FCM intervention. Second, there is a relationship between students’ perceptions of support, self-regulated learning, and critical thinking skills. The general perspective of students about FCM shows that most agree with FCM. This study shows that during FCM learning, educators can provide students with several types of support and easy access to them and ensure smooth communication. Furthermore, teachers are encouraged to take on the role of learning facilitators to strengthen students’ self-regulation and thinking skills.
Improving Student’s Mastering of Concepts and Activity Using Higher Order Thinking Skills Exercises
Authors:   the Faculty of Computer Science, Universitas Pelita Harapan, Tangerang, Indonesia, Lukas Samuel , Yugopuspito Pujianto , Krisnadi Dion , Sumiyanto Andreas H. S.
Published: March 2023

High quality online learning continued to be pursued to provide good mastery of concept and to encourage student activities to learn. One way to achieve this is by providing exercises of type Higher Order Thinking skills (HOTs) for students. This research was conducted on grade IX students at a private school in Bekasi on magnetism subject. The type of this research is Quasi-Experimental research with Pretest-Posttest Only Control Group Design. The dependent variables in this research are mastery of concepts and students’ learning activities. F-test and t-test were used to obtain conclusions on the effect of HOTs type questions on the dependent variables. The students were divided into two groups, which are control and experimental group. Control group was given non-HOTs type exercises, while experimental group was given HOTs type exercises. The results from the data analysis show that the mastery of concepts and learning activities from the experimental group were higher compared to the control group.
Postgraduate Student‘s Open Educational Practices and Hurdles among Faculty of Science at Alagappa University during the Pandemic
Authors:   Alagappa University, Karaikudi, Tamilnadu, India, Muniyasamy M. , Jeyshankar R.
Published: March 2023

This study aims to analyze the practices and hurdles of open educational resources (OER) among faculty of science postgraduate students at Alagappa University, Tamilnadu, India, during the pandemic period. The present study has employed the “questionnaire” as a tool developed by the investigator through a systematic and comprehensive approach in the research design of the questionnaire forms for the survey in various phases. The investigator conducted a pilot study in different Alagappa University, India, departments. The faculty of science students of Alagappa University, Tamilnadu, India, has been selected for the population of the study. A total of 396 postgraduate faculty of science students from the departments chosen at Alagappa University, Tamilnadu, India, were initially collected. However, 30 samples were excluded due to incompleteness. A simple random sampling method was employed to select 366 data for the study. All faculty of science students at Alagappa University, Tamilnadu, India were aware of OER. However, one-fourth of students rarely used OER per day, and only a few students used it monthly. OER was taught to students by faculty at Alagappa University, which created awareness and usage of OER. More announcements or news about OERs being posted on official university websites would increase student awareness of OERs. The significant hurdles shared by students in this study in using OERs are the low quality of OER, limited technology, the OER repository, and the time-consuming to download OER resources.
Policies to Control and Evaluate Regional Regulations on Taxes and Levies in Indonesia: Re-centralisation?
Authors: Ambarwati Sinta Devi , Sudarsono Sudarsono , Hadiyantina Shinta
Published: March 2023

The research analyses whether the regulations concerning the mechanisms of control and evaluation of regional regulations on taxes and levies, as outlined in Law No.1 of 2022, comply with the concept of regional autonomy in Indonesia. With normative juridical approach, this research found that the mechanisms of control and evaluation of regional regulations on taxes and levies do not comply with the concept of regional autonomy. However, such mechanisms are required in Indonesia as a unitary state that is based on autonomy, since no system of autonomy works in the absence of control. Nonetheless, in this case, the supervisory authority given to the central government, in the form of preventive and repressive supervision, tends to cause too much interference in the process of shaping policies regarding regional taxes and levies, which should be within the authority of regional governments. Therefore, assertive and specific provisions should be made to prevent intervention by the central government that goes beyond what is required
Child Soldier Ban: An International Regulatory Discourse
Authors: Lago Manuel Campos
Published: March 2023

Children are frequently turned into child soldiers or used as human shields in armed conflicts. The use of child soldiers is condemned by all nations and is regarded as a grave breach of both children's rights and international humanitarian law. The paper aims to discuss pertinent provisions of international legal norms, particularly those that relate to child soldiers in the sequence of their adoption. Additionally, it presents the issue of the implementation of several international conventions on the issue of using child soldiers and its atrocities in the international community. As the result, when it comes to addressing the issue of child soldiers, the international legal sources do not present a consistent picture. There has been a various provision in the determination of minimum age of a child that led to major debates among international communities. The situation is further exacerbated by the fact that, while some countries have accepted the convention as binding on themselves, their implementation faces significant challenges, such as the fact that the majority of international treaties lack sanctioning power, limiting their ability to properly accomplish the preventive purpose.
Platelet rich fibrin (PRF) and its application in oral surgery: A literature review
Authors: Vasudev Diwakar , Vasudeva Dhananjay , Garg Akanksha , Rani Manisha
Published: March 2023

Platelet rich fibrin (PRF) is a autogenous platelet concentrate containing growth factors and cytokines, trapped in fibrin matrix. Growth factors which are present provides ideal environment for wound healing and regeneration of the tissues. Platelet Concentrate have evolved a long way since 1954. In recent time it has been used in the field of medical science including dentistry, oral surgery, plastic surgery, orthopaedic surgery etc. This review discuss the evolution of platelet concentrate, its preparation technique and its application in the field of dentistry and oral surgery.
Comparative analysis of oral epithelial malignancies using routine stain and modified Cajal’s trichrome stain: An histopathological study
Authors: Pachpande Priyanka , Mandale Mandakini , Bhavthankar Jyoti , Humbe Jayanti , Nandkhedkar Vaishali , Wagh Savita
Published: March 2023

Diagnosis of initial epithelial pathology maybe difficult in Oral Squamous Cell Carcinoma (OSCC), early invasive squamous cell carcinoma and other atypical epithelial malignancies, under routine Haematoxylin and Eosin (H and E) stain. In this context, an appropriate differential stain capable of distinguishing epithelial cells in the connective tissue may well prove to be a valuable aid. In the present study, we endeavor to use Modified Cajal's trichrome stain for making diagnosis easier without resorting to expensive diagnostic aids. Aim of present study is to assess both the epithelial and connective tissue elements in early invasive carcinoma, verrucous carcinoma and oral squamous cell carcinoma in tissue sections stained with modified Cajal's trichrome stain (MCTS) and to compare it with H and E-stained sections.

Formalin-fixed, paraffin-embedded tissue blocks of early invasive SCC (n = 10) Verrucous carcinoma (n = 10) OSCC (n = 10) were stained with MCTS and H&E. The sections were compared based on set histopathological criteria.

In SCC cases stained with MCTS, invasion into connective tissue and keratin pearls were strikingly evident. Depth of invasion could be more accurately determined. Thus, CTS is a good differential stain, clearly delineating the epithelial elements from the connective tissue elements visually.
Mucormycosis of mandible – A rare case series
Authors: Badhan Tejal Sanjay , Shah Kanchan M , Landge Jayant S , Goyal Parul
Published: March 2023

Mucormycosis is a rare fungal infection with high morbidity and mortality rate as compare to its prognosis which is poor. Coronavirus disease 2019 (COVID-19) infection may be associated with a wide range of bacterial and fungal co-infections. We report the case of a patient with COVID-19 infection, which, during the course of the treatment, developed rhino-orbital mucormycosis. Very few cases of mucormycosis of mandible have been reported in literature. In this article, we present three cases of mucormycosis affecting mandible and the surgical management for it given in our institute.

Extraction of all mobile teeth was done along with mechaincal curettage and sequestrectomy performed.

Patients are kept in regular follow up and referred to Prosthodontics department for rehabilitation.

COVID-19 associated mucormycosis is aggressive and locally invasive, therefore early diagnosis and management is imperative to improve prognosis and help reduce morbidity. Mandible is not affected frequently by mucormycosis but is aggressive. Caution before attempting dental extraction which can worsen ongoing infection will ensure good outcomes, shorter hospital stay and better rehabilitation.
Angiomyoma vs solitary fibrous tumour – A histopathological dilemma
Authors: Tahasildar Jyoti , Prakash Sharada , Diwakar Ashwini , Khatoon Hajira
Published: March 2023

Benign neoplasms associated with blood vessels make up a wide spectrum of lesions ranging from reactive lesions to high grade malignant tumours in the oral cavity. Angioleiomyoma is one such uncommon benign soft tissue tumor rarely observed in oral tissues. Microscopically characterized by proliferation of smooth muscle cells intermingled with abundant blood vessels. It rarely affects the upper lip and only few cases have been reported. This is a rare case of a swelling involving the upper lip in a 65-year-old man present for 4 years. History of trauma to the same region was reported. The medical, personal and dental history of the patient were unremarkable. Histopathological evaluation using routine H&E stain followed by special stains and immunohistochemical stains were done for ruling out various differential diagnosis and arriving at the diagnosis of Angiomyoma. For the year-long follow-up period after the surgical removal, no recurrence was noted. The presented case emphasizes the importance of histological and immunohistochemical examinations to arrive at the definitive diagnosis of rare tumours such as angiomyoma.
The end of the American domination era and the formation of the multipolar world
Authors: Kozlov Korney
Published: March 2023

After the collapse of the Soviet Union in 1991 the bipolar world order that existed for more than 40 years went down in history. A new era of the unipolar world order has begun, led by the United States, which now have an opportunity to set the "rules of the game" themselves and change them if necessary. However, in the late 2010s, it became clear that American leadership does not look indisputable, and the liberal world order supported by them is in obvious decline. This was the result of both foreign and domestic political mistakes and miscalculations of the United States itself. At the same time the growth of the new centers of power in the world weakened the American dominance. The events of 2022 clearly revealed the ongoing processes. It’s accompanied by various crises, such as high inflation in many countries, record prices for the energy resources, as well as a shortage of food products. The article reveals the causes and consequences of the ongoing processes.
An information system to support preliminary design of small spacecraft
Authors: Tkachenko Ivan S. , Safronov Sergey L. , Korovin Maxim D. , Ivanushkin Maxim A. , Krestina Anastasiya V.
Published: March 2023

With the development of information technology, the role of support systems for the technical products design process has increased significantly. The capabilities of knowledge management systems make it possible to ensure the commonality of terminology, object definitions and relations between them. In addition, the use of formal semantics is necessary to support the reuse of knowledge. The article discusses ways to improve the efficiency of the small spacecraft design process and a creation of tools for the knowledge exchange about the functional characteristics of typical subsystems of such vehicles. The creation of an information system to support the preliminary design of small spacecraft, which contains information linked to the relationship between the functions and components of subsystems and their characteristics, is considered. The created system facilitates the synthesis of various product configurations. When developing the information system, modern approaches in the field of structural and functional classifications of small spacecraft systems and approaches existing in the field of taxonomy to create database structures were used. The information system database contains a set of characteristics for a wide range of small spacecraft equipment. As an example of the use of an information system to support the design of small spacecraft, the process of choosing the characteristics of a power supply system for a promising small spacecraft designed to provide communication between mobile ground terminals is considered..
Designing an ontology of the e-learning course content
Authors: Solovov Alexander V. , Menshikova Anastasia A.
Published: March 2023

Knowledge modeling, closely related to ontologies, is an important semantic technology and research area. The article deals with the e-learning course content model concept. The content model is based on structuring the content into separate fragments, called learning elements. These learning elements integrate into a tree directed graph. The content model is defined as a combination of such a graph and a table of attributes of educational elements with requirements for didactic indicators of their study. The rules for building models of the electronic educational content are formulated. The mathematical properties of these models are discussed and their integral characteristics are introduced. The proposed approach to content modeling is in line with the SCORM specifications for international e-learning, complements them with targets, didactic design algorithms and analysis of educational materials. Formation algorithms and methods of presenting the content model make it possible to automate the process of its construction and didactic analysis in the form of a visual interactive dialogue between developers of electronic educational resources in instrumental author's environments.
High-efficiency and easy-to-fabricate integrated plasmonic grating couplers for the telecommunication wavelength range
Authors:   Skolkovo Institute of Science and Technology (Skoltech), Zemtsov D.S. ,   National Research Nuclear University «MEPhI», Zemtsova A.K. ,   Skolkovo Institute of Science and Technology (Skoltech),   National Research Nuclear University «MEPhI», Smirnov A.S. ,   Skolkovo Institute of Science and Technology (Skoltech), Garbuzov K.N. ,   Skolkovo Institute of Science and Technology (Skoltech), Starikov R.S. ,   National Research Nuclear University «MEPhI», Kosolobov S.S. ,   Skolkovo Institute of Science and Technology (Skoltech), Drachev V.P. ,   Skolkovo Institute of Science and Technology (Skoltech)
Published: March 2023

The paper describes results of the numerical simulation and experimental characterization of plasmonic gratings and waveguides in the optical range of 1520 – 1630 nm. Gold structures were coated with a 630-nm thick tetraethylorthosilicate layer to achieve higher coupling efficiency for plasmonic gratings using lensed optical probes. We experimentally demonstrated gold input/output plasmonic gratings with an efficiency of about – 3.8 ± 0.2 dB per grating. The measured loss of the plasmonic mode propagating over the surface of the gold waveguide was 0.14 ± 0.02 dB / μm. The work was carried out with the aim of studying integrated plasmonic structures for the development of a hybrid photonic-plasmonic integrated technology.
Multifocal metalens for detecting several topological charges at different wavelengths
Authors:   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Nalimov A.G. ,   Samara National Research University, Kotlyar V.V. ,   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS,   Samara National Research University
Published: March 2023

A combined high-aperture metalens in a thin silicon nitride film, which consists of two inclined sector metalens, is considered. Each sector metalens consists of a set of binary subwavelength gratings. The diameter of the lens is 14 μm. It has been shown using time-domain finite difference method that the metalens can simultaneously detect optical vortices with two topological charges –1 and –2, in almost the entire visible wavelength range. The metalens can distinguish several wavelengths that are focused at different points in the focal plane: a 1 nm change in wavelength results in a focal spot shift of about 4 nm. When the metalens is illuminated by a Gaussian beam with left-handed circular polarization, two optical vortices with topological charges 1 and 2 are simultaneously formed at 6 nm between each other at focal distance equals 6 nm. This metalens can be used to increase information in transmission channel in wireless telecommunication systems by selecting the space-time modes of laser radiation with different topological charges and different wavelengths. The considered microlens is an example of a compact demultiplexer.
Determining the error in measuring the spherical concave mirror radius of curvature with a laser rangefinder
Authors:   Bauman Moscow State Technical University, Sakharov A.A. , Zhivotovsky I.V. ,   Bauman Moscow State Technical University, Karasik V.E. ,   Bauman Moscow State Technical University, Patrikeeva A.A. ,   Bauman Moscow State Technical University
Published: March 2023

An instrument and technique for assessing errors of measuring optical surface radius of curvature with a laser rangefinder are presented. Errors of optical instrument alignment with a wave-front sensor are shown to influence the accuracy of measuring the mirror radius. Errors of the rangefinder-aided technique for measuring the surface radius are estimated. A computer analysis shows that the developed scheme of misalignment measurement allows a relative error of 0.02 – 0.3 % to be attained for mirrors ranging in radius from 1 m to 10 m. The choice of the accuracy characteristics of the rangefinders used for measuring the optical surface radius of curvature is justified.
A metalens-based optical polarization sensor
Authors:   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Nalimov A.G. ,   Samara National Research University, Kotlyar V.V. ,   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS,   Samara National Research University, Stafeev S.S. ,   IPSI RAS – Branch of the FSRC “Crystallography and Photonics” RAS,   Samara National Research University
Published: March 2023

An optical microsensor of the laser light polarization state based on a metalens is proposed. Well-known polarization sensors based on metasurfaces usually transmit different types of polarization at different angles to the optical axis. The polarization sensor proposed in this work forms different patterns for different polarization types at the metalens focus. Specifically, the left-handed circular polarization at the focus forms a ring-shaped spot, the right-handed circular polarization - a round focal spot, and linear polarization forms an elliptical spot with two side lobes. Moreover, the angle of inclination of the elliptical focal spot corresponds to the angle of inclination of the initial E-vector of the linearly polarized beam. The simulation is consistent with theoretical predictions. A 30-μm metalens with a low aspect ratio, high numerical aperture, and short focal length equal to the incident wavelength 633 nm in a 120-nm thick thin film of amorphous silicon is designed, fabricated and characterized.
The Relationship Between Ming Dynasty and The 15 No Punish Countries: Focus on Xian-Luo
Authors:   HUFS Institute of History and Culture, LIM Sang Hun
Published: March 2023

This study summarized the relationship between Ming Dynasty and Xian-Luo to see if Ming Dynasty really punished Xian-Luo. During the 277 years of Ming Dynasty, there was not a single armed conflict between Ming Dynasty and Xian-Luo during 135 envoys. It is important that the later emperors kept Xian-Luo as one of the “No Punish Countries” in Huang Ming Zu Xun but it would be more reasonable to see it as a product of a friendly relationship between Ming Dynasty and Xian-Luo.
There are many reasons why the relationship between Ming Dynasty and Xian-Luo could develop in a friendly manner, but it may be because their respective interests of establishing an international order in name and Xian-Luo's political and economic interests fit. Ming dynasty and Xian-Luo was able to adjust relations between the southwestern countries, stabilize changes, and maintain the international order he established. Xian-Luo was also able to take huge economic gains through tribute and combined trade with Ming dynasty. In such a relationship, it would not have been necessary to provoke the other person to break the existing Eu life. The result soon led to rave reviews under the name of “Xian-Luo is the closest” and frequent visits to Xian-Luo up to 110 times.
German Attitude and intervention to Hungarian Revisionism 1920-1941
Authors:   HUFS Institute of History and Culture, Kim Jiyoung
Published: March 2023

During World War II, Germany understood in Hungary's territorial revisionism. The decisive reason why Germany supported Hungary in territorial negotiations between Hungary and Romania was that Hitler wanted stability in the Balkans in order to lead World War II to victory. This is because Germany absolutely needed a stable supply of oil produced in Romania's oil fields. Germany was aware of the situation in which Hungary was ready to go to war with Romania if Hungary's claim to the Transylvanian territorial issue was not accepted, so it subdued Romania and interceded for Romania to comply with Hungary's demands. Of course, the territorial recovery supported by Germany resulted in Hungary being subordinated to Germany's wartime policy, and as Germany was defeated in World War II, Hungary faced the fate of standing in the position of a defeated country along with Germany.
The Factors of Lowering the Voting Age of the Constitutional Assembly Election Act and the Influence of the North Korean Election Act
Authors:   HUFS Institute of History and Culture, KIM JINHEUM
Published: March 2023

The North Korean Election Act had a great influence on the process of deciding the Constitutional National Assembly Election Act. In 1948, the United Nations Temporary Commission on Korea on Korea compared and studied North Korea's election law with the election law enacted by South Korean Interim Legislative Assembly, and had a meeting to listen to the opinions of major domestic figures on the age of North Korea's right to vote. In the interview, the age issue of voting rights was mentioned first, and in North Korea's election regulations, it was also mentioned that the age of voting rights was 20 years or older.
While the election law was enacted in South Korea, North Korea continued to criticize the South Korea's election law as undemocratic and limited. On the other hand, North Korea touted that North Korea's election laws and socialist countries' election laws represent 'true democracy'. This situation served as a very unfavorable factor for the United States to show off the excellence of American democracy in South Korea, and rather a positive factor in the process of enacting a “democratic” election law. The U.S. military government was considering left-wing propaganda in the process of enacting the election law. In addition, North Korea's election law directly or indirectly affected the decision-making process of the U.S. military government. In this regard, it can be confirmed once again through the issue of the age of the election law that South Korea and North Korea consciously and unconsciously influence each other through various ways.
A Model of a System of Simultaneous Equations with a Lag Effect for Estimating the Quality of an Advertising Campaign
Authors: Drin Svitlana , Reznichenko Yehor
Published: March 2023

This article describes the creation of a more generalized system of simultaneous equations for forecasting the level of sales depending on advertising campaigns on different channels and other factors. RStudio (R programming language) and Google Colab (Python programming language) environments describe the creation of a model based on real data of a product. The Hausman specification test was applied to determine the model estimation method. As a conclusion, the indicators of advertising campaigns turned out to be endogenous variables, which indicates the importance of using the 2MNK method. It was found that the volume of advertising is the cause of the volume of sales according to Granger, which cannot be said about the reverse assumption - the causality of the volume of advertising from sales according to Granger. The ”depth” of lags is also determined, namely, one lag for both advertising channels. The dependence of sales volumes on various factors, including product distribution, the price index, the influence of advertising and its lags, and the influence of competitors’ advertising activities, was evaluated. The coefficients of the resulting more generalized system of simultaneous equations were estimated using the two-step least squares method. All statistical indicators testify to the adequacy of the model. Performance indicators (ROI - return on investment) of advertising campaigns showed that advertising both on television and on the Internet is profitable for the company’s product in question. The relevance of this article lies in the creation of a more general system of simultaneous equations with the inclusion of a product sales forecast model taking into account the influence of advertising.