bluuebunny/crossref_metadata_2025 huggingface dataset:
El liderazgo directivo en la satisfacción laboral de los docentes de una universidad privada, Lima 2023
Authors: Gustavo Bernnet Alfaro Peña
Published: July 2023

Esta investigación tuvo el objetivo de determinar la implicancia del liderazgo directivo en la satisfacción laboral de los docentes de una universidad privada. Lima 2023. Es del tipo aplicada, de diseño no experimental, de nivel correlacional causal, de corte transversal y con una muestra de 80 docentes. Su técnica de recolección de datos fue la encuesta y el instrumento ha sido el cuestionario. Para medir el liderazgo directivo se eligió el Cuestionario MLQ, mientras que para la medición de la satisfacción laboral se utilizó la Escala SL-SPC. En ambos casos, la confiabilidad fue buena: ,984 y ,088, respectivamente, de acuerdo con el alfa de Cronbach por ser de ítems politómicos. Se obtuvo por resultados que en el liderazgo directivo predominó el nivel eficiente con 92,5%, seguido del nivel regular (7,5%); mientras que para la satisfacción laboral los mayores porcentajes se registraron en muy satisfecho (37,5%) y promedio (28,7%). Respecto a la prueba de hipótesis general, existe influencia del liderazgo directivo sobre la satisfacción laboral, ya que p<,05 y el R2 de Nagelkerke igual a ,348 que equivale a 34,89%. Se concluye en que se acepta la hipótesis alterna y, por consiguiente, se rechaza la hipótesis nula
Manifestaciones oftalmológicas del SARS-COV-2 en población pediátrica: artículo de revisión
Authors: Hoyos Triviño Yuli Jessica , Durango Rodríguez Sonia Verónica , Tamara Córdoba German Guillermo , Pacheco Paredes Camila Andrea , Medina Pérez Johannes Javier , López Petro Karin Daniela
Published: July 2023

Antecedentes: La primera conjuntivitis asociada con COVID-19 se informó en un proveedor de atención médica que desarrolló conjuntivitis después de examinar a un paciente que luego dio positivo. Esto arrojó luz sobre el riesgo potencial de transmitir el virus a través de la superficie ocular. El virus puede infectar a las células huésped a través del receptor ACE2, este receptor lo podemos encontrar en la córnea y la conjuntiva e incluso en las capas epiteliales internas del ojo. Metodología: Se realizó una revisión sistemática a través de diversas bases de datos de enero de 2019 a abril de 2023; la búsqueda y selección de artículos fue llevada a cabo en revistas indexadas en idioma inglés.  Resultados: Se sugiera que uno de los mecanismos propuestos para la infección del SARS-CoV-2 en el ojo es a través de la inoculación directa de los tejidos oculares a partir de gotitas respiratorias o partículas virales en aerosol y también la migración desde la nasofaringe a través del conducto nasolagrimal o incluso la diseminación hematógena a través de la glándula lagrimal. Las principales manifestaciones en orden de frecuencia son la Conjuntivitis, Epiescleritis, queratitis, enfermedad inflamatoria orbitaria, entre otras. Conclusiones: La presente revisión ofrece información actualizada y detallada sobre las principales manifestaciones oftalmológicas del SARS-CoV-2 y los mecanismos fisiopatológicos propuestos hasta la fecha.
DIFFERENT ASPECTS OF DR. AMBEDKAR'S NATIONALISM
Authors: Pandey Dr. Manish Kr. , Upadhyay Dr Akhilesh K
Published: July 2023

‘Nation’ represents a spirit of homogeneity towards fellow inhabitants sharing a common culture, ethnicity, race, religion and language or any one of these. One of the nation builders of New India, Dr Ambedkar's nationalism is not only in the form of struggle against colonial authority but also against the nefarious concept of exploitation of ‘Dalits’ and ‘untouchability’ in the social structure in the Indian environment. An important element of Ambedkar's nationalism is the unified common interest among the Indian citizens, which would not have been possible without ‘Social Identity, Economic Redistribution and Political Representation’ of the downtrodden-exploited class in the archaic social structure. Against the excellence based nationalism of western modern nationalism, Dr. Ambedkar has given importance to awakening and collective inclusion of enlightened India based on History of Ideas. Thus, for Dr. Ambedkar, nationalism means - the right to civil life and the sense of duty to be tied in the thread of unity.
Reliable task allocation for soil moisture wireless sensor networks using differential evolution adaptive elite butterfly optimization algorithm
Authors: Huang Haitao , Tian Min , Zhou Jie , Liu Xiang
Published: July 2023

Wireless sensor technology advancements have made soil moisture wireless sensor networks (SMWSNs) a vital component of precision agriculture. However, the humidity nodes in SMWSNs have a weak ability in information collection, storage, calculation, etc. Hence, it is essential to reasonably pursue task allocation for SMWSNs to improve the network benefits of SMWSNs. However, the task allocation of SMWSNs is an NP (Non-deterministic Polynomial)-hard issue, and its complexity becomes even higher when constraints such as limited computing capabilities and power are taken into consideration. In this paper, a novel differential evolution adaptive elite butterfly optimization algorithm (DEAEBOA) is proposed. DEAEBOA has significantly improved the task allocation efficiency of SMWSNs, effectively avoided plan stagnation, and greatly accelerated the convergence speed. In the meantime, a new adaptive operator was designed, which signally ameliorates the accuracy and performance of the algorithm. In addition, a new elite operator and differential evolution strategy are put forward to markedly enhance the global search ability, which can availably avoid local optimization. Simulation experiments were carried out by comparing DEAEBOA with the butterfly optimization algorithm (BOA), particle swarm optimization (PSO), genetic algorithm (GA), and beluga whale optimization (BWO). The simulation results show that DEAEBOA significantly improved the task allocation efficiency, and compared with BOA, PSO, GA, and BWO the network benefit rate increased by 11.86%, 5.46%, 8.98%, and 12.18% respectively.
Survey of VR Products to Treat Social Phobia among College Students Based on Logistic Regression and K-Means Clustering Analysis
Authors: Li Quan , Qiu Jianwei , Liu Xiaoying , Huang Caimeng , Liang Ling
Published: July 2023

Social phobia or social anxiety disorder, is characterized by a fear of embarrassing situations in front of others, leading to long-term chronic anxiety disorders. The purpose of our study is to examine the market prospects of using virtual reality (VR) technology for the treatment of social phobia. Specifically, we aim to investigate the current prevalence of social phobia among college students in eight universities in Guilin and explore their willingness to adopt VR technology as a treatment option. To achieve this, we utilized various data collection methods, including questionnaire surveys, literature surveys, and field interviews. Through descriptive statistical analysis we gained insights into the respondents’ demographics and their perceptions of social phobia and its treatment. Subsequently, we constructed a binary logistic regression model to identify the influencing factors contributing to social phobia among college students. Additionally, we conducted factor analysis, which revealed that the aspects of service quality, safety, and environmental quality were or utmost concern. Finally, we employed K-Means cluster analysis to differentiate the distinctive characteristics of potential users and develop effective strategies for the advancement of VR technology in social phobia treatment.
Link Prediction in Human Complex Network Based on Random Walk with Global Topological Features
Authors: Hussain Syed Shah , Arif Muhammad , Inayat Osama Bin , Gul Haji
Published: July 2023

Link Prediction in Human Complex Networks aims to predict the missing, deleted, or future link formations. These complex networks are represented graphically, consisting of nodes and links, also referred to as vertices and edges, respectively. We employ Link Prediction techniques on four different human-related networks to determine the most effective methods in the Human Complex domain. The techniques utilized are similarity-based, primarily focused on determining the similarity score of each network. We select four algorithms that demonstrated superior results in other complex networks and implement them on human-related networks. Our goal is to predict links that have been removed from the network in order to evaluate the prediction accuracy of the applied techniques. To accomplish this, we convert the datasets into adjacency matrices and divide them into training and probe sets. The training session is then conducted, followed by the testing of the data. The selected techniques are implemented to calculate the similarity score, and the accuracy is subsequently measured for each dataset. This approach facilitates a comprehensive comparative analysis of the various predicting techniques to determine the most effective one.
El humor gráfico dialogado en la prensa diaria madrileña durante la ‘gripe española’ (1918-1919): Aguirre en El Fígaro
Authors: González Díez Laura , Benito Cabello Mario F. , Pérez Cuadrado Pedro
Published: July 2023

La presente investigación propone, en primer lugar, una contextualización del panorama de la prensa madrileña diaria en 1918, cuando hace su aparición la mal denominada gripe española; en segundo lugar, plantea una aproximación al género del humor gráfico dialogado que se ofrece durante la pandemia —y a sus autores— que, con diversas acepciones se ofrece en los diarios de la época como un valor informativo y crítico que había aparecido en sus páginas el siglo anterior; y, finalmente, realiza un análisis cuantitativo y cualitativo de este tipo de inserciones humorísticas en el diario El Fígaro, entre 1918 y 1920, y de su autor, el polifacético Lorenzo Aguirre.
Sourire en crise. Les photoreporters de l’Albanie communiste (1944-1991)
Authors: Rapper Gilles de
Published: July 2023

Cette étude porte sur les photoreporters comme catégorie distincte de photographes. La toile de fond de cet article n'est donc pas l'histoire du journalisme et des journalistes, mais celle de la photographie telle qu'elle peut être reconstituée dans le contexte particulier de l'Albanie communiste (1944-1991). La dictature mise en place par Enver Hoxha en 1944 et qui lui survécut jusqu'en 1991 a en effet produit une immense quantité de photographies qui ne peuvent être réduites à la catégorie de « propagande » généralement associée à la production photographique des régimes totalitaires. Par leur nombre, leur diffusion et les contraintes politiques qui pèsent sur elles, les photographies de presse constituent un genre particulièrement important de cette production et c'est à elles, ou plus précisément à leurs producteurs, que l’on s'intéressera. L'objectif de cet article est ainsi de saisir le sens de la catégorie de « photoreporter » et d'expliquer ses caractéristiques et ses transformations tout au long de la période communiste en Albanie.
Sex Determination by Evaluation of Foramen Magnum on Computer Tomography Scanning Among Sri Lankan Population
Authors: Sanjaya B. , Vadysinghe A. N. , Sivasubramanium M. , Ekanayake E. M. K. B. , Rodrigo G. , Nawarathna L. S. , Liyanage L. P. M.
Published: July 2023

Introduction: Sex determination using human skeletal remains is a challenging task for forensic practitioners and foramen magnum is used at lesser extents for this purpose. The aim of this study was to determine the sex by evaluating the parameters of the foramen magnum in a Sri Lankan population using computed tomography (CT).Methods: CT images of 300 individuals aged between 20 to 60 years, comprising 146 males (49%) and 154 females (51%), obtained from the Radiology Department of National Hospital, Kandy, Sri Lanka were retrieved for the study. Four parameters of the foramen magnum, namely length, width, circumference, and area, were measured/calculated using the RadiAnt Dicom Viewer 2022.1 software and analyzed using SPSS 26 software.Results: The analyses indicated that all four measurements were significantly higher in males than in females. All the parameters showed positive correlations with each other. Discriminant function analysis indicated that length was the most dimorphic single parameter for males, with an accuracy of 76%, and for females, the length also provided an accuracy of 71%.Conclusion: Results of this study show that the parameters of the foramen magnum, mainly the length, can be used for sex determination. By combining other parameters of sexing human bones, more accurate results for sex determination can be obtained.
Trends and Patterns of Long Bone Fractures in Relation to The Road Traffic Accidents, Assaults, and Falls Among Patients Admitted to Emergency Treatment Unit in Teaching Hospital Karapitiya
Authors: Gunasinghe W. K. P. , Warushahannadi J.
Published: July 2023

Introduction: Long bone fractures pose an increasing challenge to the health care system and the financial status worldwide.Objectives: To study long bone fracture (LBF) types, fracture patterns, prevalence, and associated factors in relation to road traffic accidents (RTA), assaults, and falls.Methodology: The study was a descriptive cross-sectional, prospective study in patients aged 18- 60 years, over one-year period.Results: The study group consisted of a total number of 300 patients. Most 78%(n=233) of the patients were males. The majority 26 %(n=77)were between 18 – 24 years of age. Most of the LBF patients 79%(n=236) were due to RTA. Male predominance was noted. The incidents of assaults (42) revealed, fractures were due to blunt forced weapons in 93%(n=39) and the majority 77%(n=17) of LBF occurred at 6-8 meters of height falls. In RTA the commonest victims of LBF 56% (n=132) were riders followed by drivers 31%(n=73). The tibia was the most fractured bone in riders 33%(n=113). In this study, 426 long bone fractures were revealed. Tibia was the most fractured bone 45%(n=191). Simple fractures were the commonest 98% (n= 417). Oblique fractures were the commonest 56%(n=235). There were (94%(n=399) of closed fractures. Lower limb bones are the most vulnerable bones in riders. In assaults and falls upper limb fractures could be seen frequently.Conclusion: Young adult males are more vulnerable in long bone injuries especially following RTA.
Ethnic Disparities and Outcomes of Edwards Sapien Transcatheter Aortic Valve Implantation in Kuwait
Authors: Rajan Rajesh , Al Jarallah Mohammed , Dashti Raja , Alasousi Nader , Kotevski Vladimir , Taha Mousa Ahmed Said , Balool Joud , Zhanna Kobalava D. , Al-Saber Ahmad , Setiya Parul , Brady Peter A , Endurance Evbayekha O , Baca Georgiana Luisa
Published: July 2023

Introduction:

Clinical outcomes after transcatheter aortic valve implantation (TAVI) have not been reported in the Gulf region. This study aims to identify baseline characteristics of patients undergoing TAVI, based on nationality, and analyze their overall outcomes at a single center in Kuwait.

Methods:

A retrospective study of 61 patients with severe aortic stenosis undergoing TAVI between 2018 and 2021 in Sabah Al Ahmad Cardiac Centre in Kuwait. Clinical and baseline demographics data along with preprocedural computed tomography (CT) and echocardiography were reviewed. Postprocedural outcomes, including conduction disturbances and inhospital mortality rates, were analyzed. Patients were analyzed according to Kuwaiti and non-Kuwaiti citizens' status.

Results:

The mean age of Kuwaiti patients was 72.2 ± 9.2, whereas the mean age of non-Kuwaiti citizens was 78.8 ± 5.5. No significant differences were observed between Kuwaiti and non-Kuwaiti in electrocardiogram (ECG) and CT parameters (P > 0.05). A statistically significant difference among Kuwaiti and non-Kuwaiti patients was observed only laboratory parameters, white blood cell (WBC) count, international normalized ratio (INR), and C-reactive protein (CRP). The mean value of WBC count (WBC), INR, and CRP was higher among non-Kuwaiti patients when compared to Kuwaiti patients (P < 0.05). Inhospital mortality was low 1/61 (1.6%).

Conclusion:

Cumulative inhospital mortality in TAVI was 1.6%. TAVI experience in Kuwait with Edwards SAPIEN valve is comparable to international cohorts. No significant differences in procedural outcomes, including conduction disturbance and mortality, were observed between the two subgroups.
Single Nucleotide Polymorphism in Glutathione Synthetase Gene in Indian Population with Type 2 Diabetes
Authors: Kalamkar Saurabh D. , Thorve Ashish M. , Gajjar Vijay , Divate Uma , Karandikar-Iyer Sucheta , Goel Pranay , Shouche Yogesh , Ashma Richa , Ghaskadbi Saroj
Published: July 2023

Introduction:

Our earlier study has confirmed the presence of significantly low glutathione (GSH) in individuals with type 2 diabetes. Low levels of GSH in addition to other factors can be due to the presence of single nucleotide polymorphism (SNP) in the gene glutathione synthetase (GSS). We have therefore checked the presence of SNPs in GSS, known to be associated with GSH deficiency, in the Indian population.

Methods:

Blood samples were collected from cases (people with diabetes) and controls (individuals without diabetes) for GSH estimation and DNA isolation. Amplicons obtained against selected exons of GSS after polymerase chain reaction amplification were sequenced and analyzed for the presence of SNPs.

Results:

A significantly low GSH was found in the case compared to control group (P < 0.001). However, we did not find any reported or novel SNPs associated with GSH deficiency in either of the groups.

Conclusion:

Data obtained suggest that the lower GSH found in individuals with diabetes of Indian origin is not contributed by SNPs in GSS reported otherwise in different population.
Prevalence and Determinants of (Work-Related) Musculoskeletal Disorders among Dentists - A Cross Sectional Evaluative Study
Authors: Thacker Hardi , Yasobant Sandul , Viramgami Ankit , Saha Somen
Published: July 2023

Background:

Work-related musculoskeletal disorders (WMSDs) are the second most common cause of disability, accounting for 17% of all Years lived with a disability (YLDs) worldwide. Healthcare professionals, especially dentists, are known to be at a higher risk of WMSDs. Therefore, this study aims to determine the point and period prevalence of WMSDs among dentists and to assess the risk factors for WMSDs, including workstation analysis.

Methods:

This cross-sectional study was conducted among 120 dentists from three dental colleges in Gujarat (Ahmedabad and Gandhinagar), India. A structured questionnaire was used to collect sociodemographic and occupational history along with pre-validated standardized tools such as the Nordic Musculoskeletal Questionnaire (NMQ), Rapid Entire Body Assessment (REBA) score sheet and Quick Exposure Checklist (QEC). Data analysis was performed using SPSS version 20.

Results:

The period prevalence of MSDs and WMSDs were 85% and 75.8% respectively, and the point prevalence was 39.2% and 23.3% respectively. Prosthodontists reported the highest prevalence of WMSDs. The neck (64.7%) was the most commonly affected area. A statistically significant result was obtained between MSDs and BMI (P = 0.02), qualification (P = 0.01) and between WMSDs and duration of work in the sitting posture (P = 0.03).

Conclusions:

The prevalence of both MSDs and WMSDs was found to be high. Dentists with higher BMI, higher qualifications, lack of breaks, having poor workstations and higher REBA and QEC scores, whose job tasks involve continuous inspection, frequent bending of elbow joints, frequent repetitive motions, tasks that require them to reach distances greater than 20 inches and tasks that involve twisting of the waist are at a higher risk of developing MSDs.
The Long-Forgotten Technique of Pin Retained Restoration - A Case Report
Authors: Panadan John J. , Sharma Rohit , Sharma Anjali , Sharma Madhurima
Published: July 2023

To restore severely damaged teeth to the greatest state for health, function, and aesthetics continues to be a challenge for all practising dental surgeons. A pin retained restoration is an intricate restoration involving the insertion of one or more pins into the dentin to provide sufficient resistance and retention. These pins help in anchoring dental amalgam or composite to the tooth structure. This auxiliary retentive means help in the restoration of mutilated teeth in young individuals whose pulp chambers are relatively large and the dentinal tubules are comparatively immature. This case study sheds insights on the successful rehabilitation of a severely damaged premolar tooth with pins and composite resin restoration.
Comparison of Fracture Resistance of Endodontically Treated Teeth Restored with Different Aesthetic Post and Core Systems under All Ceramic Restoration Luted with Two Types of Cements
Authors: Amritha KM , Gopalakrishnan Sandhya , Anilkumar S , Chandrababu K
Published: July 2023

Context:

Fracture of endodontically treated teeth is a grave sequela that a clinician should seriously ponder. Suitable selection of restorative materials is a requisite for long-term clinical success.

Aims:

To compare the fracture resistance of endodontically treated teeth restored with three different posts luted using two different cements under all ceramic crowns.

Settings and Design:

This in vitro study was conducted in the Department of Prosthodontics, Government Dental College, Kottayam, Kerala, India.

Methods and Material:

Thirty endodontically treated single-rooted mandibular premolars in which post spaces were prepared and divided into three different groups. Group 1 (n = 10): zirconia post group. Group 2 (n = 10): quartz fibre post group. Group 3 (n = 10): glass fibre post group. Each group is sub-divided into two based on the luting system: resin-modified glass ionomer cement (RMGIC) or dual-cure resin cement (DCRC). The fracture resistance testing was performed in a universal testing machine with a crosshead speed of 0.5 mm/min.

Statistical Analysis Used:

The mean fracture resistance were analysed using independent sample Student t-test and one-way ANOVA.

Results:

Within the zirconia post group, the mean fracture resistance was higher in DCRC sub-group compared to the RMGIC sub-group and the difference was statistically significant (p = 0.017). The difference in fracture resistance between three different post systems was not found to be statistically significant with respect to both the luting systems.

Conclusions:

It was observed that when zirconia post is used, the mean fracture resistance was higher in dual-cure resin group compared to the resin-modified GIC group.
Orthodontic traction of impacted central incisor after surgical removal of mesiodens using cone-beam computed tomography guidance
Authors: Abdelemam Ahmed Abdelmonem , GamalEldien Mahmoud Mohammed , Elsayed Mohamed Ahmed
Published: July 2023

Extra tooth like mesiodens is not uncommon; it is conical in shape and smaller in size compared to permanent incisors, with a higher frequency in the maxilla than the mandible and in males than females. The earlier the diagnosis and treatment the lesser the complications in eruption and occlusion. This case describes the treatment of a patient with impacted maxillary incisors and canine in the same quadrant due to retained primary teeth and mesiodens. The treatment was done in three stages. In the first stage, the deciduous incisors were extracted. In the second stage, surgical removal of the mesiodens was done, which allowed enough space for the maxillary right permanent central incisor. The third stage was orthodontic extrusion.
Comparison of urban and rural soils based on speciation of heavy metals by BCR sequential extraction procedure: A case study in the historical and industrial city of Sisak, Croatia
Authors:   Croatian Geological Survey, Zagreb, Croatia, Šorša Ajka , Durn Goran ,   Faculty of Mining, Geology and Petroleum Engineering; University of Zagreb, Croatia, Grizelj Anita ,   Croatian Geological Survey, Zagreb, Croatia, Halamić Josip , Prša Gazilj Lucija ,   Chalmers University of Technology, Department of Architecture and Civil Engineering, Gothenburg, Sweden
Published: July 2023

Within the framework of the pan-European project “URban GEochemistry (URGE) in Europe – Soil, children, health”, pedological and geochemical investigations of the soils of the city of Sisak and its adjacent surroundings were carried out, and three urban and two rural soil profiles were examined. The mineralogical composition and concentration of selected potentially toxic elements (PTEs) Cr, Cu, Ni, Pb and Zn in the soil were determined. The Community Reference Bureau of Reference (BCR) sequential extraction procedure (SEP) of these PTEs was undertaken and the potential risk to human health and the environment was assessed. The concentrations of Cr and Ni are generally similar in urban and rural soil profiles, while the concentrations of Cu, Pb and Zn in soil horizons/layers are higher in urban profiles. The extracted fractions of PTEs gave the following general distribution: in urban soil profiles residual (RES) > reducible (ORG) or oxidisable (FEMN) > exchangeable (CARB), except for Cu where ORG > RES > FEMN > CARB, while in rural soil profiles RES > FEMN or ORG > CARB, except for Pb where FEMN > RES or ORG > CARB. The differences between soils in urban and rural profiles depend mainly on the historical land use, i.e. on the duration and intensity of anthropogenic influences on the soil and, to a lesser extent, on the geogenic origin of the parent material and the pedogenic processes. The studied elements in the urban soil profiles are predominantly of anthropogenic origin, indicating a possible influence of the ancient settlements of Segestica and Siscia and of heavy industry in the 20th century. The anthropogenic influences on the rural profiles are low and geogenic influences dominate. Risks to the environment were assessed in the soil profiles based on PTE concentrations in the CARB fraction and the sum of the CARB, ORG and FEMN fractions from BCR SEP. All calculated risks to human health and the environment were rated as no-risk, very low risk and low risk.
Thermal-Structural and Macromechanical Behavior Analysis of
Graphite-Based Laminated Composite
Authors: Jyotiprasad G. , Dowluru Sreeramulu , Rallabandi Sivasankara Raju , Sharma Neeraj , Sharma Rakesh Chandmal , Palli Srihari
Published: July 2023

High temperatures are usually used to process composite materials. The
temperature difference between the composite material polymer matrix composites
(PMCs) and the ambient environment is generally around 200°C to 300°C when they
cool down to room temperature. The combination of layers is used to create a
perfect laminate. Due to the varying thermal expansion rates of each of the
three layers in a laminate, the residual stress in the structure can vary
depending on the angle at which it is placed. For instance, the thermal strains
are different in transverse and longitudinal directions. The stresses and strain
were investigated at different orientations and found that the outcomes are
better than the longitudinal and transverse stacking. This work investigates the
influence of thermal loads and mechanical loads on the stress-strain
relationship of a polycrystalline carbon (PCO) polymer (graphite fiber)
laminate. Through a combination of methods, the researchers developed a
macromechanical analysis that considers the multiple strains and local stresses
of composite materials. Past research could indicate the ideal ply orientation
for composites.
Behavioral Finance In Investment Decisions
Authors: Asbaruna Latifah Wulandari Binti , Gorib Ridwan Ismail , Syifa Muhammad Akbar Ali
Published: July 2023

Behavioral finance has an important role in finance, namely understanding human behavior, including investor behavior. The type of data used is secondary data, namely data that is not directly given to data collectors, this data is obtained from books, scientific articles and internet sites, materials related to behavioral finance. The data collection technique in this study is a literature study that is directly related to behavioral finance. The method used in this research is the Systematic Literature Review (SLR), where the results of this study try to map the trends that occur regarding behavioral finance, also try to predict where this research will go, so that later it is expected to provide new input and views for the world of behavioral finance, what what needs to be explored at this time, what contributions are needed at this time, and can be an attraction for other researchers to study behavioral finance.
Readiness of Islamic Religious Education Teachers for Digital Learning Post Pandemic Covid 19
Authors: Ruswandi Agus , Firdaus M Aditya , Ruswandi Riki
Published: July 2023

The consequence of the Covid 19 pandemic is an increase in the use of digital-based information technology, which also applies to education. Learning was obligated to use the internet network during the Covid 19 pandemic. Regarding the Covid 19 pandemic, digital-based learning would become a necessity for teachers and students to be able to use digital-based learning devices. Teachers and students must be able to use digital devices for learning process. But the state of the problem is whether Islamic Religious Education teachers are already ready to meet the requirements of digital learning. Therefore, It is necessary to investigate the extent to which Islamic Religious Education teachers are equipped to confront all-digital learning in the future. The purpose of this study was to investigate the preparedness of Islamic Religious Education teachers in Madrasa` for digital-based learning. This study's research method is a descriptive reserach. This study's data source is Islamic Religious Education teachers in the Madrasa` in West Java, with a 15 Madrasa and 42 teachers as source of data. According to the findings of this study, as many as 26.18% of teachers were "very capable" of using computer devices. As many as 21.43% of teachers were "very capable" of using Microsoft office. As many as 4.76% were "very ready" for e-learning on Islamic Religious Education. An average of 9.52 teachers are "very ready" to learn through video conferencing applications. Islamic Religious Education teachers are still unprepared to deal with digital-based learning. This is due to the fact that not all teachers have mastered the software applications used for learning, as well as the limited facilities available in schools to support digital-based learning. The findings of this study suggest that teachers should improve their skills in using software for e-learning and creating digital learning tools, teaching materials, and learning documents. Madrasa provide adequate facilities to support the digital-based learning process to keep up with current technological and information developments.
Hopf Bifurcation and Self-Organization Pattern of a Modified Brusselator Model
Authors:   College of Mathematics and Information Science, Henan Normal University,  china, Chen Mengxin
Published: July 2023

This paper reports the Hopf bifurcation and self-organization pattern of a modified Brusselator model. The model is a non-standard Brusselator model, it involves the nonlinear restraint term. For the non-diffusive model, we give the types of unique positive equilibrium. It is found that the unique positive equilibrium may be focus, node, or center and we establish their stability, respectively. Especially, there exists the spatial homogeneous Hopf bifurcation when the equilibrium is a center. The first Lyapunov number technique is applied to perform the direction of the spatial homogeneous Hopf bifurcation. In the sequel, the occurrence conditions of the Turing instability and the spatial inhomogeneous Hopf bifurcation are given for the diffusive model. Moreover, by using the normal form theory, we show that the Hopf bifurcation is supercritical or subcritical. Finally, the self-organization patterns induced by the Turing instability and periodic solutions resulting from the Hopf bifurcation are displayed by employing numerical simulations. Our theoretical predictions and numerical results reveal that the modified Brusselator model enjoys the temporal period oscillation and spatial oscillation due to the Hopf bifurcation and Turing instability, respectively. These results may help us to figure out the spatio-temporal dynamics of such modified Brusselator model.
The Maternal, Cord Blood and Neonatal Serum Ischemia-Modified Albumin Levels in Different Modes of Delivery
Authors: ULUBAS ISİK Dilek , UNAL Sezin , DEMİREL Nihal , AKDAŞ REİS Yıldız , EREL Özcan , BAŞ Ahmet Yağmur
Published: July 2023

Background: Human serum albumin modifies in response to ischemic events and affinity of N-terminal decreases for metal especially for cobalt. This modification results in the formation of ischemia modified albumin (IMA). The IMA rises immediately after ischemic event and remains high for several hours after cessation of ischemia. The purpose of this study was to investigate the effects of mode of delivery on the IMA levels in mothers and their term infants, and to determine which mode causes much oxidative stress. Study Design: The cases were grouped according to the mode of delivery: vaginal delivery group (VD, n=40) and cesarean group (C/S, n=40). The serum samples were collected from mothers before delivery (pre-delivery), from the cord blood (CB) and from the infants at the 24th hour after birth according to the following criteria: (1) singleton live birth, (2) gestational age between 37- 41 6/7 weeks, (3) birth weight of 2500 and 4000 g, and (4) Apgar scores ≥ 8 at 5 min. The IMA levels of both groups were compared. Results: The pre-delivery serum IMA levels were similar between two groups. The cord blood IMA levels were significantly higher in C/S group than those with VD group (0.694±0.113 vs 0.642±0.084, p=0.021). The serum IMA levels were higher in infants born by C/S compared with those born by VD, but the result was not statistically significant. Conclusion: Our results showed the IMA levels in infants and cord blood was influenced by the way of delivery and supported that oxidative stress is reduced in vaginally delivered infants.
ELECTROMAGNETIC CURRENT CONVERTERS: OPERATING LIMITS
Authors: Bulychev Alexander V. , Gribkov Maxim A.
Published: July 2023

The urgency of the task is due to the desire to ensure the ideal transmission of primary relay protection signals to microprocessor devices. The article presents the materials of the comprehensive study of electromagnetic current converters from the standpoint of assessing the possibility of using them as current sensors in microprocessor relay protection systems. The study was conducted in order to assess the limiting capabilities of electromagnetic current converters by analyzing their methodological errors. To assess the methodological errors of electromagnetic current converters, the mathematical apparatus of the theory of automatic control is used. The possibility of representing electromagnetic current converters by dynamic links with linear transfer functions is shown. The amplitude and phase frequency characteristics are considered. Analytical expressions for the frequency characteristics of electromagnetic current converters are given. Concise visual mathematical expressions are proposed to determine the boundaries of the frequency range of electromagnetic current converters according to the main parameters of the substitution circuit. The limits of the application of linear transfer functions for the mathematical description of these converters are estimated. Examples of relay protection signals passing through electromagnetic current converters are considered. Recommendations for improving the conversion properties of electromagnetic current converters are given.
FEATURES OF DESIGNING POLARIZED ELECTROMAGNETS WITH POSITIVE ENGAGEMENT OF THE ARMATURE
Authors: Ivanov Ivan P. , Samuilov Dmitriy V. , Trofimov Evgeniy Yu. , Chernov Gennadiy A. , Vasilyev Evgeniy G.
Published: July 2023

The article considers the features of designing polarized electromagnets with positive engagement of the armature, these issues being insufficiently studied in the technical literature. The relevance of the topic is due to the need to create such electromagnets to use as small-sized electromechanical release devices in modern circuit breakers of internal production.

The aim of the study is to develop a scientifically based methodology for designing a new class of polarized electromagnets, taking into account their design features determined by the positive engagement of the armature. The article analyzes the characteristics and distinctive features of the design and the operating principle of the electromagnet manufactured by Schneider Electric. Verification calculations were carried out using numerical modeling by the finite element method. It is noted that in order to ensure the small dimensions of the electromagnet in the working state, the magnetic induction in the magnetic circuit elements is close to saturation induction.

Comparison of the calculated values and simulation results with experimental data showed sufficient accuracy for engineering calculations when using the proposed technique, which indicates its reliability and the possibility of using it in the design of polarized electromagnets with positive engagement of armature of different designs.
BALANCING ECCENRTIC ROTOR OF SYNCHRONOUS MOTOR
Authors: Ignaev Stanislav V. , Makarov Valeriy G.
Published: July 2023

The relevance of the study is due to the widespread use of turbomechanisms (pumps, fans, compressors) in various industries. For electric drives of these mechanisms, the urgent task is to increase the speed of rotation of the motors. This task is associated with an increase in the productivity of turbomechanisms, which affects the increase in the volume of production of products. However, commercially available AC electric motors at network frequency of 50 Hz have rotational speeds of no more than 3000 rpm. In order to obtain twice the rotation speed, a synchronous motor with a six-phase stator winding and a jet rotor was designed. When powered by a general industrial three-phase network of 50 Hz, it has a rotational speed of 6000 rpm. However, due to the eccentric design of the rotor, the motor shaft has significant beats caused by the pendulum moment. These runouts can lead to the destruction of the bearing and premature failure of the synchronous motor.

The purpose of the study is to analyze the ways of balancing the eccentric rotor of a high-speed synchronous motor.

Materials and methods. Analytical methods of theoretical mechanics and the theory of electromechanical energy conversion were used in the work. The mechanical calculation was performed using the Compass 3D program.

The main results of the study are a picture of the moments arising from the eccentricity of the rotor, and the analysis of ways to compensate for the moment of imbalance of the rotor. It is established that the dependence of the moment of imbalance on the angle of rotation of the rotor is a harmonic function. Therefore, in order to compensate for the imbalance, it is necessary to create a moment that varies in antiphase to the moment of imbalance of the rotor. It is shown that the most rational ways to compensate for rotor runouts are balancing with eccentrics and compensation with an additional electromagnetic moment created with the help of a magnetic field. Based on the comparative analysis of the effectiveness of these methods, their advantages and disadvantages are shown. The principle of compensating for the moment of imbalance of the rotor with the help of an additional electromagnetic moment created by the stator winding is considered.

Findings. The effectiveness and expediency of balancing the rotor by means of exposure to a magnetic field are shown.
Klasifikasi Sentimen Masyarakat di Twitter terhadap Ganjar Pranowo dengan Metode Naïve Bayes Classifier
Authors: Ritonga Sinta Wahyuni , . Yusra , Fikry Muhammad , Cynthia Eka Pandu
Published: July 2023

Indonesia is a country with a Democratic political system. The public is given freedom of speech, collaboration and public criticism. In the modern era, the use of social media is growing rapidly at the community level. One of the social media trends in Indonesia is Twitter which is used to convey aspirations to the government and as a means to convey daily activities, opinions, culture and get the latest information or news from Indonesia and abroad. Public opinion taken from Twitter can be positive, negative and neutral. The number of tweets on Twitter one of the trend topics in Indonesia is Ganjar Pranowo, can be used as a source of data in the assessment of sentiment classification which is processed to produce accuracy values. This study aims to classify public opinion on social media Twitter about Ganjar Pranowo using Naïve Bayes Classifier method. In the classification processing using a dataset of 4000 tweet data with two labeling classes, positive and negative to determine the efficiency of NBC performance combined with TF-IDF weighting, feature selection using supervised learning approach techniques. The results of the test on the classification of public sentiment research on Twitter about Ganjar Pranowo using NBC method using 10% of the test data from the dataset used to produce an accuracy value of 83.0%.
Analisis Sentimen Masyarakat Terhadap Penghapusan Honorer Berdasarkan Opini Dari Twitter Menggunakan Naïve Bayes Classifier
Authors: Andriyani Dwi Ratna , Afdal M , Monalisa Siti
Published: July 2023

The removal of honorees is currently a hot topic throughout Indonesia. Sharing how honorary personnel do so that the honorary removal policy is not implemented. Most honorary personnel have served for several years, but the government has issued a circular on the abolition of honorees. Various pros and cons of society regarding the abolition of honorees, such as honorary workers can lose their jobs, not get income, and unemployment is increasing. The purpose of the study is that the government can provide strategies that must be carried out in the event of the removal of honorees, such as appointing all honorees to become Civil Servants or Government Employees with Work Agreements. So the removal of the honoree became one of the trending topics on Twitter social media in 2022. From the results of the analysis conducted, public opinion that uses Twitter is very influential for honorary workers by grouping opinions into three categories, namely positive opinions, neutral opinions, and negative opinions. So the study with text mining used the Naïve Bayes Classifier algorithm with data from Twitter tweets from January 2022 to December 2022 with 2,705 data. The results of this study obtained accuracy with 10 K-fold Cross Validation on K-10, which was 73.01%. And it was found that sentiment polarity against the removal of honorees on positive class sentiment by 10% against agreeing to remove honorees with 285 data tweets, neutral class sentiment by 67% against agreeing and disagreeing with the removal of honorees with 1,801 data tweets, and negative class sentiment by 23% against disagreeing with the removal of honorees with 619 data tweets
Classification of Character Types of Wayang Kulit Using Extreme Learning Machine Algorithm
Authors: Fatmayati Fryda , Nugraheni Murien , Nuraini Rini , Rossi Farli
Published: July 2023

Wayang Kulit, which is an original Indonesian culture, is conditioned by the meaning of life in every performance. However, Wayang Kulit is currently less popular among young people due to a lack of understanding of the art of Wayang Kulit performance. To be able to provide knowledge to the younger generation about Wayang Kulit, one of which is by introducing the characters that exist in Wayang Kulit performances. This study aims to build an image classification system for Wayang Kulit characters by applying the neural network method using Extreme Learning Machine (ELM) and morphological feature extraction. Morphological feature extraction provides information about the shape characteristics of objects present in the image which are then used for input in the classification process. The Extreme Learning Machine (ELM) method may arbitrarily establish the weight value between the input neurons and the hidden layer during the classification step, resulting in a quicker learning pattern. Based on the test results using the confusion matrix, the accuracy value is calculated to get a value of 81%.
Analisis Pola Asosiasi Data Transaksi Penjualan Minuman Menggunakan Algoritma FP-Growth dan Eclat
Authors: Najmi Risna Lailatun , Irsyad Muhammad , Insani Fitri , Nazir Alwis , . Pizaini
Published: July 2023

Every day transaction activities between companies and consumers continue to be carried out. This makes transaction data more and more and accumulate. This transaction data can be processed into more useful information using technology. Data mining is a technology that can work on a collection of transaction data into information that can be taken by companies as decision makers. The association rule method is used as a method to see the relationship between items in a transaction data. To analyze transaction data, researchers used the FP-Growth and Eclat algorithms. There are three stages of association in this study which are distinguished from the confidence value. The results in the first stage have a minimum confidence value of 0.4, the FP-Growth algorithm produces 41 association pattern rules, while the Eclat algorithm produces 32 association pattern rules. Then in the second stage the minimum trust value is 0.5, the FP-Growth algorithm produces 40 association pattern rules, for the Eclat algorithm it produces 32 association pattern rules. In the third stage, the minimum trust value is 0.6, the FP-Growth algorithm generates 32 association pattern rules, while the Eclat algorithm generates 30 association pattern rules. The results of the association pattern rules show that the Eclat algorithm is more efficient in determining the association pattern rules than the Fp-Growth algorithm