bluuebunny/crossref_metadata_2025 huggingface dataset:
Standardization of the Klingler Dissection Technique at 3400 m above Sea Level
Authors: Naveda Herminia , Vargas Yuri , Condori Juan , Montesinos Alexander , Miranda Franklin , Virto Carlos , Rivas Cristabel , Miranda Lugo , Gallegos Yvan , Peralta Iris , Virto-Farfan Hesed
Published: December 2024

Introduction:

This study aimed to evaluate the efficacy of different formaldehyde concentrations (5%, 8%, and 10%) on the Klingler dissection technique, specifically in the context of high-altitude (3400 m above sea level) bovine brain preparation.

Methods:

Forty bovine brains were prepared using various Klingler methods and were distinguished by formaldehyde concentrations. The brains were subjected to a standardized process of fixation, freezing, thawing, and dissection. The evaluation criteria included the ease of meningeal removal, tissue consistency, and the degree of encephalic tissue degradation, assessed through a Likert scale. The statistical analysis involved analysis of variance tests for group comparisons and Spearman correlations to explore relationships between evaluation metrics. The Ethics Committee of the Andean University of Cusco approved the protocol by RESOLUCIÓN N° 021-2023-VRIN-UAC.

Results:

Formaldehyde concentrations of 5% and 10% were significantly more effective than the 8% concentration at facilitating meningeal removal, enhancing tissue consistency, and reducing encephalic tissue degradation. Notably, the 5% concentration demonstrated superior outcomes in terms of dissection quality and tissue color preservation. Statistically significant differences were observed between groups, with post hoc analyses indicating that the 5% and 10% groups were superior to the 8% group.

Conclusions:

The Klingler technique revealed that a 5% formaldehyde concentration is most conducive for high-altitude bovine brain dissection. This concentration optimizes tissue preservation and dissection quality, potentially offering insights for anatomical studies and educational practices. Future research should explore the applicability of these results to human brain anatomy and consider additional environmental and procedural variables.
A Cadaveric Investigation of Human Middle Meningeal Artery Variations and their Clinical Significance
Authors: Kumar Abhimanu , Puri Nidhi , Patnaik V. V. G. , Gupta Pratibha
Published: December 2024

Introduction:

The middle meningeal artery (MMA) is a critical blood vessel supplying the dura mater of the skull. While traditionally described with a consistent origin, recent studies suggest anatomical variations exist. This study aimed to investigate these variations in human cadavers and assess their clinical significance.

Materials and Methods:

A series of 46 human cadaver heads were dissected. The MMA course, origin (maxillary artery or other sources), and branching patterns were documented. The data were statistically analyzed to determine the prevalence of each variation. Clinical implications of the variations, particularly for neurosurgical procedures and interpretation of neuroimaging, were explored.

Results:

The study identified a spectrum of MMA variations. The most common origin was the maxillary artery 50%, but variations including accessory branches and origins from the accessory meningeal artery 27% or ascending pharyngeal artery 13% were observed. The course and branching patterns also displayed variability, with 10%. These findings were statistically analyzed to determine the significance of each variation. The clinical significance of the variations was discussed, highlighting potential challenges during surgical procedures such as skull base surgeries and the need for careful preoperative imaging evaluation.

Conclusion:

This cadaveric study revealed a significant degree of variation in the human MMA anatomy. Understanding these variations is crucial for neurosurgeons, radiologists, and other health-care professionals to ensure safe and accurate surgical planning and interpretation of neuroimaging studies.
Effect of acupressure on childbirth outcomes in nulliparous women: A randomized clinical trial
Authors: Shirdel Elham , Taghizadeh Ziba , Farnam Farnaz , Ghorbani Mahboobeh , Haghani Shima
Published: December 2024

BACKGROUND:

Non-pharmaceutical method is one of the conventional methods of reducing labor pain. Acupressure is suggested as an effective method for reducing labor pain with favorable effects on the outcome of childbirth. Different acupressure methods are suggested for this purpose; the most effective one has to be investigated. Therefore, the present study compared the effect of two of the most effective acupressure methods, namely lumbar rotation in a standing position and the 6th splenic point (SP6) acupressure, in the active phase of labor on pain intensity, duration of labor, and childbirth experience among nulliparous women.

MATERIALS AND METHODS:

In this semi-experimental randomized clinical trial, 126 nulliparous women in Bint Al-Huda Hospital, Bojnourd, Iran, February–June 2021, were enrolled (by convenient sampling based on the inclusion criteria) and assigned to two interventions and a control group (no intervention). Baseline pain intensity was measured by VAS at a dilatation of 4 cm, immediately after intervention, and at dilation of 8 cm. Group “A” received lumbar rotation in standing position and group “B” received SP6 acupressure; once at 4 and once at 8 cm dilatation. The length of the active phase and the second stage of labor and the total duration of labor were calculated in minutes. The mothers completed the Walker Birth Experience Questionnaire within 2 h after the labor. Mean values were compared using the one-way analysis of variance (ANOVA, for three groups, with posthoc tests for significant differences) and independent samples t-test (for two groups) using SPSS v.16 and considered significant at P values < 0.05.

RESULTS:

After the intervention, groups A and B had a lower mean pain intensity (5.80 ± 1.83 and 4.82 ± 2.14, respectively) than the control group (7.70 ± 1.91, P < 0.001) and after the second intervention (8.06 ± 1.55, 7.68 ± 1.60, 9.92 ± 0.36 in groups A, B, and control, respectively; P < 0.001). Labor duration was longer in the control group (228.11 ± 82.31 min active phase; 58.38 ± 23.86 min second stage, and 372.92 ± 114.41 min total) than group B (180.66 ± 60.68, 40.00 ± 18.56, and 310.39 ± 89.66 min, respectively, P < 0.05). The mean total birth experience scores were lower in the control group (63.59 ± 6.59), compared with those in groups A and B (73.14 ± 7.95 and 72.84 ± 8.29, respectively, P < 0.001), and in three dimensions of own capacity, perceived safety, and participation (P < 0.05).

CONCLUSION:

Lumbar rotation in the standing position and SP6 acupressure had a positive effect on pain intensity, duration of labor, and birth experience.
The causal model of spiritual well-being based on an accompanist of god and spiritual intelligence
Authors: Moshashaei Seyed Kiyan ddin , Yarahmadi Yahya , Sharifi Hassan Pasha
Published: December 2024

BACKGROUND:

The aim of this study was to investigate the causal model of spiritual well-being based on the attachment to God and spiritual intelligence, mediated by constancy in long-term goals, belief in a just world, and self-compassion.

MATERIALS AND METHODS:

The current study is of structural equation model correlation designs. The statistical population of the research consisted 4500 of chronic mental patients’ families in the year 2022–2023. Using G.Power software, 392 families were selected as the sample size. These questionnaires were used in the field section; spiritual well-being, attachment to God, spiritual intelligence of, belief in a just world, Strength and Stability Long-term goals, and self-compassion. A structural equation model and covariance test were used to analyze the data.

RESULTS:

The results showed that the conceptual model of the relationship between spiritual well-being based on attachment to God and spiritual intelligence with the mediating role of belief in a just world, persistence in long-term goals, and self-compassion fits the experimental model.

CONCLUSION:

Consequently, spiritual well-being is associated with positive psychological outcomes in both clinical and nonclinical situations, and is a significant component of quality of life and related to health.
Explaining the classroom behavior process of medical sciences students: A grounded theory
Authors: Moradi Yeganeh , Fereidouni Zhila , Abdollahi Abbas , Jeihooni Ali Khani , Poornasiri Nazanin , Jokar Zahra , Dehghani Samaneh , Karimi Shahnaz , Keshavarzi Mohammad Hasan
Published: December 2024

BACKGROUND:

Classroom behavior is one of the important variables for the curriculum in the learning path of learners. The aim of this study was to explain the classroom behavior process of medical sciences students.

MATERIALS AND METHODS:

In a qualitative study using the grounded theory approach, the classroom behavior of 21 students from different medical fields was assessed. Purposeful and theoretical sampling methods were used. Data collection tools were semi-structured interviews. Sampling was continued until saturation, and data analysis was performed according to the Corbin and Strauss 2015 approach. The study was done from 2020 until 2023.

RESULTS:

The results of the data analysis were divided into three main categories (representation scene, behavioral representation, and representation effect) and nine subcategories. The representation scene consisted of the following subcategories: learner features, teacher and teaching features, classroom environment, and educational content. Behavioral representation was the second category and included groupism, the behavioral continuum, and students’ expectations. The representation effect was the third category and included academic progress and positive and negative emotions.

CONCLUSION:

Students’ classroom behavior is affected by various factors. Professors and policymakers of educational programs can strengthen the positive classroom behaviors of medical students in the shadow of learning theories by recognizing, paying attention, and planning to get closer to educating students with professional behavior and performance.
Explaining the perception of students and professors regarding the clinical education challenges and strategies of the operation room
Authors: Farmad Somayeh Akbari , Khosravi Marzieh , Hasani Sadegh Abaei , Bosak Sarvin
Published: December 2024

BACKGROUND:

Clinical education is an essential part of medical science education in the operating room, and considering its high importance, it is necessary to identify challenges in this regard. The study aims to explain the perception of students and professors regarding the challenges and strategies for improving education in the operating room. The context of this study was the Khomein School of Medical Sciences.

MATERIAL AND METHODS:

This was a qualitative study and conventional content analysis research that was conducted in 2023, using semi-structured interviews. The study population included professors and students of the operating room of the Khomein School of Medical Sciences that were selected using the snowball sampling method. The data reached saturation with five interviews with professors and seven interviews with students. This study used Graneheim and Lundman’s method for data analysis.

RESULT:

The most important educational challenges in the operating room from the students’ perspectives included the need to improve educational and welfare spaces, the need for effective teacher-student interaction, the need to improve educational-hospital facilities and equipment, and the need for effective student-physician-operating room staff atmosphere. The most important challenges from the professors’ perspectives included correct professional and ethical principles in dealing with students and effective psychological and educational support by the professor. The most important strategies from the students’ perspectives included effective clinical interactions, supportive clinical professors, and clarification of educational duties and expectations, and from the professors’ perspectives included improving the clinical environment, a competent clinical professor, and the need for effective educational information.

CONCLUSION:

This study can increase the awareness of clinical professors and educational managers of operating room majors about clinical education challenges in this field and strategies for solving them. Finally, such actions can help to create a more effective clinical environment.
Predictive moral sensitivity in nursing students: The roles of empathy and spiritual health
Authors: Baghcheghi Nayereh , Koohestani Hamid Reza , Karimy Mahmood , Keshavarzi Mohammad Hasan
Published: December 2024

BACKGROUND:

The evidence indicates a phenomenon of ethical erosion in healthcare students. Variables like empathy and spiritual health might affect moral sensitivity in nursing students. The present study is an attempt to predict the moral sensitivity of nursing students based on empathy and spiritual health.

MATERIALS AND METHODS:

A cross-sectional and analytical study was carried out at Saveh University of Medical Sciences, Saveh, Iran, in 2023. In total, 110 nursing students were included in the study by census method. Data gathering was done using Ellison and Paloutzian spiritual health inventory, Jefferson’s empathy inventory, and Lutzen’s moral sensitivity scale. The collected data was analyzed using Pearson’s correlation and multiple regression analysis.

RESULTS:

The mean scores of empathy, spiritual health, and moral sensitivity in nursing students were equal to 99.8 ± 15.25, 81.32 ± 10.01, and 65.09 ± 12.23 respectively. Empathy and spiritual health were positively and significantly related to moral sensitivity (P < 0.01). In total, 31% of variation in moral sensitivity was attributed to empathy and spiritual health.

CONCLUSION:

Empathy and spiritual health were positively and significantly related to moral sensitivity. Taking into account the role of spiritual health and moral sensitivity in nursing students, enhancing this aspect of health through informing individuals and highlighting the positive aspects and potential effects on physical and mental health and professional performance in return is recommended.
Video role-play versus powerpoint lecture in the knowledge domain among medical students during the COVID-19 pandemic era: A systematic review and meta-analysis
Authors: Sungkono  , Makrufardi Firdian , Azizah Annisa Fairuz Nur , Ekaputra Firdiawan
Published: December 2024

The coronavirus disease 2019 (COVID-19) pandemic disrupted conventional teaching methodologies, forcing educational institutions to swiftly adapt to remote learning. This study aimed to compare the effectiveness of video- and powerpoint-based teaching methods in the knowledge of medical students using a systematic review and meta-analysis. A systematic review of the literature was conducted to identify relevant studies that compared the efficacy of video-based and PowerPoint-based teaching methods in medical students during the COVID-19 pandemic. PubMed, MEDLINE, and Embase were systematically searched, and studies published before October 2023 were considered. Fixed and random-effects meta-analyses were performed to calculate the pooled effect of estimates. All statistical analyses were performed using Review Manager software. The analysis included nine studies that met the inclusion criteria. We observed a significant effect of video-based education methods compared to powerpoint-based education methods, with a mean difference of 2.42 (95% CI: 2.09–2.75, P < 0.0001). Furthermore, our sensitivity analysis did not reveal a substantial alteration, with the mean difference remaining at 2.42 (95% CI: 2.09–2.75, P < 0.0001). After analyzing the funnel plot, no indications of publication bias were observed. Video role-play proved to be a powerful tool for knowledge acquisition among medical students during the COVID-19 pandemic. Lecturers should consider incorporating video role-play into teaching methods for asynchronous learning purposes.
Prevalence of urinary incontinence and its associated predictor and Self-care behavior among the elderly females in Chaiyaphum Province, Thailand: Cross-sectional study
Authors: Chompoowisate Patchareepon , Glangkarn Sumattana , Namyota Chaloemporn
Published: December 2024

BACKGROUND:

Urinary incontinence (UI) has been overlooked by elderly females because it is considered an embarrassment and physical dysfunction that occurs naturally in older women. However, UI is problematic if symptoms are ignored, and the condition becomes chronic.

MATERIALS AND METHODS:

This cross-sectional descriptive research was conducted in a community context using semi-structured interviews as data collection methods. The interviews involved 1475 elderly females who live in Muang district, Chaiyaphum province and were analyzed by Chi-square, Pearson Product Moment Correlation Coefficient, Stepwise multiple regression, Bivariate and Multivariate at 0.05 statistical significance.

RESULTS:

The study found a 30.37% prevalence of UI. Nine factors are related to the cause: Pelvic muscle exercise, water intake, caffeine and alcohol intake, diabetes, environmental obstacles, activities, constipation, urination frequency, and exercise. Elderly females who had their highest education at primary school to high school also had the possibility to experience 64% and a diploma had the possibility to experience 68% less UI than illiterate ones. The elderly females who had more than 23 kilograms per square meter (kg/m2) for body mass index (BMI) tend to have 2.64 times more than those who had 18.5–22.9 kg/m2 at 0.05 statistical significance. UI self-care behavior on overall prediction was moderate, whereas behavioral change and self-care performance were high.

CONCLUSION:

Nine factors are related to this cause. The possibility is also related to educational level and BMI. The overall UI self-care behavior showed a moderate level of prediction, but a high level of behavioral change and self-care performance.
The quality of academic life and its relationship with academic passion among university students
Authors: Al-Desouki Rasha Bassiouni , Abdellatif Mohamed Sayed , Idris Abdelfattah Issa , Mohammed Ahmed F. A.
Published: December 2024

BACKGROUND:

At a time prioritizing the comprehensive growth and welfare of university students, grasping the profound importance of both the quality of academic life and the intricacies of academic passion emerges as crucial for educators, administrators, and policymakers. This research investigates the levels of academic life quality and academic passion among university students, aiming to uncover the intricate relationship between these dimensions. Additionally, the study explores the feasibility of predicting academic life quality based on academic passion.

MATERIALS AND METHODS:

A total of 454 male and female students at Prince Sattam bin Abdulaziz University participated in the research. The researchers administered scales for academic life quality and academic passion. They employed a descriptive-analytical approach, specifically the correlational predictive method, to shed light on the relationship pattern between research variables and predict relationships among them.

RESULTS:

The research results showed a high level of academic life quality among the research sample and a high level of academic passion (harmonious) with a low level of academic passion (obsessive). Furthermore, the research results indicated a statistically significant positive correlation between the four dimensions of academic life quality (good social relationships, enjoyable academic integration, meaningfulness, effective time management, and overall satisfaction) and harmonious academic passion. On the other hand, a statistically significant negative correlation was found between certain dimensions of academic life quality (enjoyable academic integration, meaningfulness, effective time management, and overall satisfaction) and obsessive academic passion. However, the relationship between good social relationships and obsessive academic passion was not statistically significant. The results also demonstrated the potential to predict academic life quality from passion within the research sample.

CONCLUSION:

In conclusion, this research contributes valuable insights into the complex dynamics between academic life quality and academic passion among university students. These results offer implications for educational practitioners and policymakers seeking to enhance the holistic well-being and academic engagement of university students. They offer valuable insights for enhancing the overall well-being and engagement of students.
Tele-counseling services for COVID-19 patients: Experiences from a state mental health institute in South India
Authors: Manikappa Sanjeev Kumar , Shetty Kannappa V. , Ashalatha K , Bamney Urmila , Sachetha GM
Published: December 2024

BACKGROUND:

The COVID-19 pandemic has had profound implications for individuals’ physical and mental health (MH), as well as well-being of populations worldwide. Several underlying issues which have a significant impact on MH, such as stress, worry, frustration, and uncertainty, were widespread during the COVID-19 pandemic. One of the common measures resorted to was to provide MH services to the population using information technology. This study shares the experience of tele-counseling services for patients with COVID-19 living in the hospital and in-home isolation during the pandemic phase of COVID-19 in the Dharwad district of Karnataka, a southern state in India.

MATERIALS AND METHODS:

A mixed approach was used, which included 300 participants affected by COVID-19 and 3 case studies. The information was collected using a structured interviewer-administered questionnaire and case study methods.

RESULT:

The mean age of the COVID patients was 40.72 ± 14.61 years. More than half of the COVID patients (51%) received treatment at hospital. Seventy-nine percent of callers received only single counseling session. The main tele-counseling services provided included supportive counseling (44%), sleep hygienic techniques (9%), general information on COVID (15%), problem-solving techniques (1.3%), relaxation techniques (5.7%), mindful mediation (2%), grief counseling (3.3%), family counseling (1.7%), and stress management (2.7%).

CONCLUSION:

Tele-counseling services during an emergency like the COVID-19 pandemic can help in promoting MH and well-being of people affected by the pandemic. It is possible to provide such psychological first aid using information technology.
Relationship between burnout and fear of missing out among nurses in Oman: Implication for nursing practice
Authors: Qutishat Mohammed , Sabei Sulaiman Al
Published: December 2024

BACKGROUND:

Nurses’ perceived stress might contribute considerably to burnout and a fear of missing out (FOMO). This might intensify FOMO feelings since they may feel detached from social and personal activities owing to their stressful work schedules. The present study was conducted to determine the relationship between job burnout and FOMO among nurses.

MATERIALS AND METHODS:

This study used a cross-sectional design with a convenience sampling approach. A sample of 211 nurses working in Muscat/Oman completed the study questionnaires. The date was between September and December 2023. Participants completed the study questionnaires, including a sociodemographic questionnaire, an Oldenburg Burnout Inventory, and a Fear of Missing Our Scale (FOMO).

RESULTS:

A total of 211 nurses participated. Findings showed that most participants had moderate levels of FOMO and burnout (60.161% and 62.08%), respectively. There were significant differences in FOMO based on working time (F = 4.941, P = 0.008) and working area (F = 6.787, P = 0.001). The study also found a significant positive correlation between FOMO and burnout among nurses (F = 79.445, P < 0.00, R
2 = 275).

CONCLUSION:

The study indicated that nurses who had experienced more missing out had higher levels of job burnout. This might be attributed to frequent work-related activities and a lack of work-life balance. To combat this, nurses should be given clear information about their workload and duties, as well as chances for professional growth, continuing education, and career promotion, and they should be encouraged to establish boundaries between work and home life.
Health simulation masterclass in Morocco: First edition of training of trainers
Authors: Obtel Majdouline , Maijimaa T Yahaya , El Mouhajir Mohamed , Lekehal Brahim , Belyamani Lahcen
Published: December 2024

BACKGROUND:

The confluence of recent events has led to a notable increase in the use of health simulation. This work aimed to present and describe the first masterclass program in healthcare simulation dedicated to trainers at Rabat’s Faculty of Medicine and Pharmacy with the close collaboration of Mohammad VI Foundation of Health and Sciences for its first edition in Morocco.

MATERIALS AND METHODS:

This was an observational study. The participants in the training course were professors from the Faculty of Medicine and Pharmacy in Rabat as well as expert trainers from several Moroccan universities. The list of participants was identified by the head of their departments related to the Faculty of Medicine and Pharmacy of the University Mohammed V in Rabat. The program was developed by the training simulation experts supervised by the head of the Mohammad VI Foundation of Health and Sciences. Relevant aspects of our health simulation training were extracted after exploring the data NCBI sources and running the main following keywords: “Health simulation”, “training”, “simulation program”, “emergency training”, “technical skills”, “soft skills” and “Medicine”. First, we identified the different methods and approaches used in simulation-based medical training. Then, we set up our adapted simulation-based training program from February 5 to 8, 2024.

RESULTS:

A total of 70 trainees participated in the training. Most of them were assistant professors (60.3%) and 19 were full professors (30.2%). The facilitators (n = 29) were professors and doctors who were national and international experts in health simulation; most came from Rabat (n = 19), followed by Casablanca (3). Evidence-based education, educational simulation, simulation for research and innovation and simulation and docimology were the main themes addressed. Simulation-based training programs mark a significant step forward in the development of medical education.

CONCLUSION:

The pedagogical teaching skills of trainers need to be strengthened so that the transfer to learners is much more fluid and confident, such as this first edition of masterclass in Morocco organized by the Faculty of Medicine and Pharmacy in Rabat.
Optimization of Venom-Induced Consumption Coagulopathy Management with Blood Component Transfusion
Authors: Hutauruk Jessica Amelia Taruli , Hidayat Leonard
Published: December 2024

Snake envenomation, particularly in Southeast Asia, often results in venom-induced consumption coagulopathy (VICC), a life-threatening condition characterized by severe bleeding and coagulopathy. Despite its clinical significance, management protocols for VICC remain under-researched, especially in resource-limited settings. A 30-year-old male was bitten by a green snake and presented with severe symptoms, including epistaxis, hematemesis, melena, hemoptysis, and hematuria. The diagnosis was confirmed with a 20-min whole blood clotting test. Initial treatment involved transfusion of thrombocyte concentrate (TC) and fresh frozen plasma (FFP), with specific anti-snake venom (ASV) administered 19 h postbite. VICC management is challenging. The initial administration of ASV is the key treatment to neutralize procoagulant toxins, but in the absence of ASV, the administration of FFP, TC, and packed red blood cells (PRCs) can be utilized to manage coagulopathy and as supportive measures based on patient’s clinical findings. The timing and combination of these treatments are crucial in optimizing the results. Proper diagnosis of VICC involves a thorough clinical assessment and diagnostic testing. Management of VICC requires prompt administration of ASV and management tailored to the patient’s condition and available resources. This case report aims to examine the management strategies of VICC, specifically the role of blood component transfusion, and highlight the challenges of treatment in resource-limited settings.
Thematic Working Group on Theoretical Perspectives and Approaches in Mathematics Education, TWG17
Authors: Johnson Heather Lynn , Lensing Felix , Zaragoza Pedro Nicolás , Sødal Amalie
Published: December 2024

In this issue presented by the group leaders Heather Lynn Johnson, Felix Lensing, Pedro Nicolás Zaragoza and Amalie Sødal
Алгебро-геометрические квазипериодические решения нелокального уравнения синус-Гордон с обращением пространства-времени
Authors: Guan Liang , Geng Xianguo , Geng Xue
Published: December 2024

Обобщен метод алгебраических кривых, основанный на теории гиперэллиптических кривых, с целью построения алгебро-геометрических квазипериодических решений нелокальных солитонных уравнений с обращением пространства-времени. Для иллюстрации метода в качестве примера выбрано нелокальное уравнение синус-Гордон с обращением пространства-времени. В соответствии с матрицей Лакса для нелокального уравнения синус-Гордон с обращением пространства-времени вводится алгебраическая гиперэллиптическая кривая $\mathcal K_n$ рода $n$, из которой определяются уравнения типа Дубровина, мероморфная функция $\phi$ и функция Бейкера-Ахиезера $\psi_1$. С использованием теории алгебраических кривых и координат Абеля-Якоби получены потоки нелокального уравнения синус-Гордон с обращением пространства-времени. В соответствии с асимптотическими свойствами функции Бейкера-Ахиезера построены явные представления через тета-функцию для функции Бейкера-Ахиезера, мероморфной функции, в том числе для решений нелокального уравнения синус-Гордон с обращением пространства-времени.
Сравнение обобщенного единого метода с некоторыми точными методами решения и общие решения уравнения Бисваса-Милович
Authors: Aydemir Tuğba
Published: December 2024

Обобщенный единый метод, представляющий собой новый метод решения нелинейных дифференциальных уравнений с частными производными, сравнивается с некоторыми другими часто использующимися методами получения точных решений. В результате делается вывод, что обобщенный единый метод эффективно дает более общие решения в компактной форме со свободными параметрами. Кроме того, этот алгоритм весьма прост и легко выполняется на компьютере. В качестве практического примера и для доказательства своей эффективности обобщенный единый метод применяется к уравнению Бисваса-Милович. Это уравнение выводится из обобщенного нелинейного уравнения Шредингера и встречается во многих прикладных областях, в частности при моделировании распространения волн в нелинейной оптике. Рассмотрены четыре типа нелинейности в уравнении Бисваса-Милович: керровская, степенная, параболическая и двойная степенная. Обобщенный единый метод позволяет изящным образом получить точные решения для всех типов нелинейности.
Нелокальные симметрии уравнения Дегаспериса-Прочези
Authors: Li Xiaoyong , Qu Changzheng
Published: December 2024

Изучаются нелокальные симметрии уравнения Дегаспериса-Прочези, которые, как показано, тесно связаны с его интегрируемой структурой. Сначала путем применения гамильтонова оператора к градиентам спектрального параметра строятся нелокальные симметрии уравнения Каупа-Купершмидта. Далее показано, что нелокальные симметрии можно продолжить до локальных симметрий расширенной системы, если ввести новые зависимые переменные. Наконец, с помощью преобразования Лиувилля, связывающего иерархию Дегаспериса-Прочези и иерархию Каупа-Купершмидта, получаются соответствующие нелокальные симметрии уравнения Дегаспериса-Прочези.
Фермионные поля в четырехмерном пространстве-времени Боннора-Мелвина с космологической постоянной $\Lambda$
Authors: Ahmed Faizuddin , Candemir N , Bouzenada Abdelmalek
Published: December 2024

Исследовано влияние гравитационного поля, порожденного четырехмерным электровакуумным космологическим пространством-временем, на динамику фермионных полей, которая управляется уравнением Дирака. Кроме того, рассмотрена зависимость этой динамики от топологии пространства-времени. Для рассматриваемой модели из релятивистского уравнения Дирака выведено радиальное волновое уравнение и аналитически получены уровни энергии и волновые функции фермионного поля. Анализ полученных решений показывает, что такие параметры, как космологическая постоянная, параметр, характеризующий топологию пространства, и квантовые числа, играют важную роль в поведении собственных энергий квантовых частиц. В частности, показано, что наличие топологического параметра разрушает вырождение энергетического спектра.
Асимптотическая интегрируемость нелинейных волновых уравнений и квазиклассический предел пар Лакса
Authors: Kamchatnov Anatolii Mikhailovich
Published: December 2024

Введено понятие асимптотической интегрируемости нелинейных волновых уравнений, означающее интегрируемость уравнений Гамильтона, описывающих распространение высокочастотного волнового пакета по гладкому профилю, динамика которого подчиняется бездисперсионному пределу исходных уравнений. Показано, что этот предельный случай полной интегрируемости позволяет выразить квазиклассический предел пар Лакса через закон дисперсии линейных волн и интеграл уравнений Гамильтона для пакета. Если пара Лакса не зависит от производных волновых переменных, то квазиклассический предел совпадает с точными выражениями. Теория иллюстрируется конкретными примерами.
Метод обратной задачи рассеяния с использованием уравнения Гельфанда-Левитана-Марченко для некоторых нелинейных волновых уравнений отрицательного порядка
Authors: Ismailov Mansur Iskender , Sabaz Cihan
Published: December 2024

Класс нелинейных эволюционных уравнений Абловица-Каупа-Ньюэлла-Сигура отрицательного порядка получен путем применения представления Лакса для линейной системы трех уравнений первого порядка. Обратная задача рассеяния на всей оси рассматривается в случаях, когда линейная система становится классической системой Захарова-Шабата с вещественными антисимметричным и симметричным потенциалами. На основе этих результатов методом обратной задачи рассеяния с использованием уравнения Гельфанда-Левитана-Марченко получены $N$-солитонные решения для интегро-дифференциальной версии нелинейного уравнения Клейна-Гордона, связанного со скалярным полем, и модифицированного уравнения Кортевега-де Фриза отрицательного порядка.
Волны-убийцы $(2+1)$-мерного интегрируемого нелокального уравнения Шредингера с обращением пространства-времени
Authors: Liu Yindi , Zhao Zhonglong
Published: December 2024

Исследуется $(2+1)$-мерное интегрируемое нелокальное уравнение Шредингера с обращением пространства-времени, которое имеет множество приложений в механике жидкости, квантовой механике и физике плазмы. С помощью билинейного метода строятся однопериодическое волновое решение и двухпериодические волновые решения двух типов. Затем в пределе длинных волн из периодических волновых решений строятся два типа волн-убийц, которые называются кинк-образными и W-образными волнами-убийцами. Для выяснения динамических свойств кинк-образной волны-убийцы применяется метод асимптотического анализа. Волны-убийцы более высокого порядка генерируются как результат взаимодействия двух вышеупомянутых типов волн-убийц; изображения соответствующих решений содержат интересные паттерны с несколькими различными контурами. Получены полурациональные решения, представляющие взаимодействия между волнами-убийцами и периодическими волнами. Эти решения можно разделить на два типа, а именно: решения, описывающие взаимодействие с возвращением к периодическому волновому фону, и решения, описывающие взаимодействие с возвращением к постоянному фону. Представленный метод анализа допускает обобщение, применимое для анализа более сложных решений для многомерных нелокальных интегрируемых систем.
Конечные области зацепленности и информационный парадокс в заряженных черных дырах
Authors: Belokon Aleksandr Igorevich
Published: December 2024

Изучается влияние электрического заряда черной дыры Райсснера-Нордстрeма на временну́ю эволюцию энтропии излучения Хокинга, собранного в конечных областях зацепленности. Демонстрируется, что, начиная с некоторых достаточно больших размеров конечных областей, возможно выбрать такое значение заряда, при котором не возникает информационного парадокса. Для полноты описания рассмотрено влияние островов зацепленности на динамику энтропии. Показано, что при малых значениях электрического заряда происходит скачок энтропии вследствие исчезновения острова, а при значении заряда выше некоторого порогового значения остров перестает когда-либо доминировать на протяжении всей эволюции энтропии зацепленности.
Голографические анизотропные модели Эйнштейна с дилатоном и четырьмя полями Максвелла
Authors: Aref'eva Irina Yaroslavna , Rannu Kristina Allanovna , Slepov Pavel Sergeevich
Published: December 2024

В последние годы рассмотрение пятимерных моделей с действием Эйнштейна с дилатоном и полями Максвелла играет существенную роль в литературе по голографии. Как правило, одно из полей Максвелла связано с химическим потенциалом, остальные же используются для описания анизотропии в модели. Более общий сценарий включает до четырех полей Максвелла. Второе поле представляет пространственную продольно-поперечную анизотропию, а третье и четвертое поля описывают анизотропию, вызванную внешним магнитным полем. Поле Максвелла, связанное с химическим потенциалом, как правило, задается с помощью электрического анзаца, тогда как остальные три поля Максвелла - с помощью магнитного анзаца.
Продемонстрировано, что для полностью анизотропной диагональной метрики только шесть из семи уравнений являются независимыми. Одно из уравнений для материи - либо для дилатона, либо для векторного потенциала - следует из остальных шести уравнений: другого уравнения для материи и пяти уравнений Эйнштейна. Такая переопределенность системы возникает в модели благодаря тождеству Бьянки для тензора Эйнштейна и особенностям тензора энергии-импульса. Приведен метод решения системы из шести уравнений, который обобщает рассмотренные ранее случаи.
ATYPICAL SHORT-STORIES BYKOPITOVIĆ, A. NIKOLAIDIS AND SPAHIĆ
Authors:   Filozofski fakultet Nikšić, VOJINOVIĆ Vladimir
Published: December 2024

The author of this paper analyzes the relationship of the narrator in prose by Zoran Kopitović, Andrej Nikolaidis and Ognjen Spahić to oral literature. The paper tracks the status of the elements of oral literature in the texts of these authors, simultaneously analyzing the procedures and interpolations limits, according to which a particular nomenclature of written Montenegrin short-stories in the period from 1990 to 2006 was derived. The author also presents the arguments concerning the status of the three authors of short-stories, classifying their short stories in the sphere of atypical short-stories.
DEMONOLOGICAL WRITINGS AND FORMS IN THE COLLECTION ON THE FOLK LIFE AND CUSTOMS OF THE SOUTHERN SLAVS
Authors:   Sveučilište u Zadru, BABIĆ Vanda , DANILOVIĆ Danijela
Published: December 2024

The paper is a synthesis of concepts related to demonological writings and forms within the Collection on the Folk Life and Customs of the Southern Slavs (1896-2010). Through an analytical approach to the above Collection (later just Collection on the People’s Life and Customs) from 1896 to 2010, stories, beings and beliefs of a fantastic and demonological aspect are deter-mined. Further methods of synthesis and classification are then used to classify them into categories that are generally determined on the basis of visual identity. A large number of demonological beings present in the Collection are known to most South Slavs, but not all of them. Some of the beliefs we find in the tales that have been created in South Slavic areas testify of an assumption of motifs related to the demonological beings, thus creating variants of certain tales, proverbs, etc. This is a proof of the acceptance of certain folklore elements within a specific community.
ACADEMICIAN RADOMIR V. IVANOVIĆ’S STUDIES IN THE FIELD OF MONTENEGRIN LANGUAGE
Authors:   Filozofski fakultet Nikšić, VOJINOVIĆ Vladimir
Published: December 2024

The author of this paper portrays academician Radomir V. Ivanović, emphasizing the contribution of this researcher to the study of the Montenegrin language. The paper provides the most important data about Ivanović’s professional and scientific training, information on bibliographies, and a pa-noramic view of his individual theses of the Montenegrin literature and its specifics.
ITALIAN BOOKS AND JOURNALS IN THE NJEGOŠ’S LIBRARY
Authors:   Filozofski fakultet – Nikšić, KILIBARDA Vesna
Published: December 2024

The paper discusses Njegoš’s literary and general culture as a result of his self-taught education, as well as his library in this context and its origin and fate after death of the Montenegrin bishop and poet. In particular, the Italian books and journals preserved in the library until the present days are reviewed, as the source from which Njegoš could acquire or deepen his knowledge of the Italian language, literature and culture or get informed about various Italian and non-Italian topics.
SURREALISM AND ACTION OF A MYSTIC NATURE: LE TRÉSOR DES JÉSUITES (1929) AND PLEINE MARGE (1940)
Authors:   Filozofski fakultet – Nikšić, DELIBAŠIĆ Spomenka
Published: December 2024

Surrealism of the twenties shows, on the one hand, aspiration for effective action, for assumption of political, social and ethical positions and, on the other hand, great interest for metaphysical tradition and its esoteric implications. The goal of the present paper is to show how surrealists succeeded to reconcile traditional and materialistic thought with Marxist issues. The world of hermetism is the world which Breton believes, perhaps only partially, but at the same time the world which he does not refuse to believe in. A specific feature of surrealism – that condition between two extremes, between the ancient and modern, actual and non-actual, sense and deep conviction, has been analysed in a theatre piece Le Trésor des jésuites and a poem Pleine marge, which are related to the Middle Ages and important figures of esotericism and illuminism.
Boundaries of Queerness
Authors: Kehl Katharina
Published: December 2024

This book explores how race, sexuality and gender are employed in political projects of belonging, whilst examining the implications for individual identity formation, in the context of Sweden.
Арменизмы в осетинском
Authors: Гарник С.А. , Азамат А.Б.
Published: December 2024

В статье рассматривается общий круг вопросов, касающихся возможных арменизмов в осетинском языке, в частности, намечаются некоторые методологические контуры определения армянских заимствований в осетинской лексике. Авторами делается попытка систематизации материала по определенным категориям, вносятся уточнения и предлагаются новые этимологии и пояснения

The article presents a general outline of problems concerning possible Armenian borrowings in the Ossetian language. It includes particularly some methodological principles for identification of Armenian loanwords in the Ossetian lexicon. The authors try to systematise the material into certain categories, make clarifications, propose new etymologies and explanations
Time and Cost Analysis on Building Construction Project using Crashing Method
Authors: Dermawan Mohammad Fadli , Sugiarto Ricky , Santosa Teguh , Rozi Niko
Published: December 2024

Crashing method is an effort to shorten the duration of a project by accelerating the work, Building Construction in Bogor can be built with the Crashing Method to save time and minimize costs. The purpose of this study was to determine the use of the Crashing method in building construction activities, and to determine the effect of duration on the addition of heavy construction equipment on the completion of faster 1st floor, 2nd floor, and 3rd floor work. The method used is field observation, this type of research is included in the type of comparative research. Based on the results of this study, the costs incurred have decreased compared to the previous cost of Rp. 1,477,760,967.01. It is known that the Normal Cost is Rp. 26,819,720,000.00 after doing the calculation, the Crashing Cost is Rp. 25,179,405,907.94. In the calculation of the amount of Normal Cost labor of Rp. 841,309,890.35 and Crashing labor of Rp. 633,974,914.30 for total normal materials of Rp. 3,212,062,893.19. Crashing materials totaled Rp. 2,361,951,475.67. In the calculation of the duration with the addition of Concrate Pump equipment on the K-300 concrete work of the 1st floor, 2nd floor, and 3rd floor, the duration of 14 days is accelerated, the normal duration is known to be 210 days after crashing the results of the duration of 196 days.
Business Strategy for Hospital A (RSIA) Denpasar City with Business Model Canvas (BMC)
Authors: Desiree Florencia , Syaodih Erliany , Santoso Budi
Published: December 2024

The role of RSIA is less to provide real benefits to the community and has the potential to go bankrupt if there is no improvement in management. The indicators can be seen from the decline in visitation rates by 10% in 2022 and 5% in 2023, high employee turnover, hospital image through Google Reviews resulting in low average scores, and complaints on various services provided by the hospital. This study aims to map Hospital A's business model using the business model canvas so that the strengths, weaknesses, opportunities, and threats that could potentially harm the hospital can be identified. Data collection was conducted using interviews with triangulation techniques to key informants, comparison informants, and expert informants. The research approach is positivism or qualitative, which emphasizes meaning. The findings obtained are that Hospital A's market segmentation is the lower middle class with the application of vertical growth; in the value propositions block there are shortcomings such as no new services and technology, lack of communication, poor service, interior and exterior design using and needing renewal, and inadequate facilities, but has advantages in terms of price and cleanliness; in the channel block, strategic location but does not have good visibility; in the customer relationship block, there is different service treatment between room classes; hospital revenue streams from usage fees and brokerage fees; physical resources of employees are inadequate with untimely salary payments; in the key partnership block, the hospital collaborates with midwives and clinics.
A Literature Survey on Advanced Insulation Material In Buildings
Authors: Sabir Talha , Haider Syed Tauseeq , Ahmad Zunair , Yasir Ammar , Razaq Abdul
Published: December 2024

Insulating materials have an important role in maintaining the thermal efficiency of buildings by limiting heat transfer and energy consumption. This research explores the latest innovations in building insulation materials that can improve energy efficiency and sustainability. The aim of this research is to analyze the latest developments in building insulation materials, as well as explore the potential use of eco-friendly materials that have minimal environmental impact. The research method involved a comprehensive literature review of academic articles, research papers, and other relevant sources to gather information regarding innovative insulation materials being developed. The results show that insulating materials such as aerogels, vacuum panels, and phase change materials have high thermal performance and good durability. In addition, the use of sustainable materials such as recycled paper and natural fibers is gaining popularity among architects and developers. The application of advanced and environmentally friendly insulation materials is essential to improve the energy efficiency of buildings and reduce environmental impact. By utilizing innovative technologies and materials, we can create a more sustainable living environment for future generations.