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Faktor Yang Berhubungan Dengan Keaktifan Pelaporan Bahaya K3 Pada Pekerja Pelabuhan Batu Bara: Studi Cross-Sectional, Samuel Adi Kristiawan, Dewi Puspito Sari, Nur Ani, Wartini Wartini Jun 2026

Faktor Yang Berhubungan Dengan Keaktifan Pelaporan Bahaya K3 Pada Pekerja Pelabuhan Batu Bara: Studi Cross-Sectional, Samuel Adi Kristiawan, Dewi Puspito Sari, Nur Ani, Wartini Wartini

National Journal of Occupational Health and Safety

Active hazard reporting is a key indicator in preventing workplace accidents and strengthening safety culture, particularly in high-risk industries such as coal port services. This study aimed to analyze internal and external factors associated with active hazard reporting among workers in the coal port services industry. A quantitative cross-sectional study with total sampling was conducted involving all workers (N = 130). Data were collected using a structured questionnaire measuring accident history, unsafe actions, unsafe conditions, supervisor support, performance appraisal, risk level, and hazard reporting activity. Univariate and bivariate analyses were performed using the Chi-Square test. The results showed that 66.2% …


How Esl/Efl Textbooks Are Created: A Description Of The Publishing Processes For Elt Coursebooks, Timothy P. Arnold Jun 2026

How Esl/Efl Textbooks Are Created: A Description Of The Publishing Processes For Elt Coursebooks, Timothy P. Arnold

Theses and Dissertations

The purpose of this study was to describe the current ELT textbook publishing processes and evaluate a descriptive model of the publishing processes. While criticisms of ELT textbooks abound (Akbari, 2008; Bell & Gower, 2011; Jordan & Gray, 2019; Tomlinson & Masuhara, 2008; Long, 2016; etc.), little previous research has focused on describing the ELT textbook publishing. This is despite most criticisms appearing to focus on aspects of ELT textbooks that come about during the publishing processes. The work of Littlejohn (1992), McGrath (2013), and Yildiz and Harwood (2023) are exceptions to this. To provide additional descriptive information on the …


Unfriending The Kids: The Problematic Race To Childproof Social Media, Randolph A. Robinson Ii Jun 2026

Unfriending The Kids: The Problematic Race To Childproof Social Media, Randolph A. Robinson Ii

Cleveland State Law Review

A growing number of states have recently enacted new laws with the goal of protecting young people from potential harm allegedly caused by social media use. These laws are diverse in their approaches but broadly seek to limit youth access to social media platforms by imposing age verification and parental consent requirements. These laws directly implicate the First Amendment rights of both young users who will no longer be able to access speech or speak on social media platforms as well as adult users who must now submit to age verification to access these quintessential forums for political discourse.

These …


Influence Of Transformational Leadership On Volunteer Retention, Kirk David Hillabrand Jun 2026

Influence Of Transformational Leadership On Volunteer Retention, Kirk David Hillabrand

Walden Dissertations and Doctoral Studies

No abstract provided.


Her Voice In Photos: Empowering Women Through The Lens Of Resilience, Doryn Wallach Jun 2026

Her Voice In Photos: Empowering Women Through The Lens Of Resilience, Doryn Wallach

Theses - ALL

Women in midlife (ages 40–65) face a convergence of psychosocial stressors, including hormonal transitions, caregiving demands, identity shifts, and cultural invisibility, yet accessible, non-clinical supports remain scarce. This program evaluation examined whether participatory therapeutic photography, paired with brief written reflection and community witnessing, could function as an art therapy-informed, strengths-based intervention for this population. Five participants completed a week-long photography sequence structured around a challenge, reframe, and reflect arc, selecting three captioned images and a written reflection to represent their experience. Images were displayed in a digital frame installed where three midlife women served as community witnesses. The researcher collected …


From Regionalism To Continentalism: Lessons From Ecowas For The Implementation Of Afcfta., Michael Agbo Jun 2026

From Regionalism To Continentalism: Lessons From Ecowas For The Implementation Of Afcfta., Michael Agbo

Theses - ALL

Abstract: This thesis examines the Economic Community of West African States (ECOWAS) as a test for understanding Africa’s continental economic integration under the African Continental Free Trade Area (AfCFTA). It argues that the persistent failures of state-led integration, in this matter, the ECOWAS, from the repeated inability to roll out a single currency for trade within West Africa to the deliberate infiltration of France and other Western capitalist interests in the economic lives of the people of West Africa, are not just incidental failures of political will or technical implementation setbacks. They are consequences of building Pan-Africanism and integration efforts …


Neither Here Nor There: Cultural Identity Among Vietnamese Immigrants, Duyen Thu Pham Jun 2026

Neither Here Nor There: Cultural Identity Among Vietnamese Immigrants, Duyen Thu Pham

Theses - ALL

Acculturation is a fundamental aspect of the migration experience that enables individuals to adapt to new environments while maintaining meaningful connections within both familial and social spheres. Depending on class, economic conditions, and sociopolitical context, experiences of acculturation differ across generations. This thesis argues that, through the ongoing process of cultural negotiation, Vietnamese immigrants create unique cultural identities that balance adaptation to the host country with the preservation of Vietnamese cultural values, beliefs, and practices. It also explores how migration history, intergenerational differences, and cultural memory influence varied experiences of acculturation and belonging among Vietnamese immigrants in the United States. …


Preserving The Family In The Globalized Era: Explaining State Discouragement Of Women’S Rights And The Gap Between Law And Family Realities In Tajikistan, Ivy Alexandra Raines Jun 2026

Preserving The Family In The Globalized Era: Explaining State Discouragement Of Women’S Rights And The Gap Between Law And Family Realities In Tajikistan, Ivy Alexandra Raines

Dissertations - ALL

This dissertation is guided by a two-part research question, which begins by asking why Tajikistan exhibits low levels of gender equality within the family despite strong international commitments and a formally secular legal framework. The second question builds on the first by asking why a state that offers legal guarantees in line with its international commitments, as outlined by Article 16 of the Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW), invests significant energy in discouraging divorce rather than in safeguarding women’s rights that would support their ability to leave harmful marital situations. Employing qualitative discourse …


Impure Evidentialism: Essays On The Sources & Structure Of Doxastic Normativity, Felipe Oliveira Jun 2026

Impure Evidentialism: Essays On The Sources & Structure Of Doxastic Normativity, Felipe Oliveira

Dissertations - ALL

The four papers of my dissertation provide a new defense of Impure Evidentialism. The combination of evidentialism about normative reasons for belief with pragmatic encroachment (i.e. impurism) about epistemic justification is a familiar and intuitive view. However, many of the combo view’s finer points, unique advantages, and objections have not been addressed. My dissertation fills this gap by offering a new defense and in-depth look of what I take to be the most plausible version of the combo view. My version of Impure Evidentialism offers an improved and comprehensive account of the norms that govern our beliefs, explains why these …


Three Essays On Political Economy And International Trade, Shuo Zhang Jun 2026

Three Essays On Political Economy And International Trade, Shuo Zhang

Dissertations - ALL

This dissertation is composed of three papers that explore how institutions, globalization, and trade shocks affect individuals' political preferences and firms' behavior. The first paper studies how mass protest events drive political change among citizens. I exploit the 2019 Anti-Extradition Law Amendment Bill Movement (ANTI-ELAB protest) in Hong Kong and its impact on the subsequent 2019 Hong Kong District Council Election. Taking advantage of a granular dataset of organized events during the protest, I exploit spatial variation in protest intensity, as measured by the number of events, across Constituency Areas. Empirical results show that in Constituency Areas with higher protest …


Older Recent Widows’ Physical Activity Before And After Spouses’ Deaths A Qualitative Investigation Of The Impact Of Duration And Intensity Of Care Work And Social Support, Mary Theresa Pagan Jun 2026

Older Recent Widows’ Physical Activity Before And After Spouses’ Deaths A Qualitative Investigation Of The Impact Of Duration And Intensity Of Care Work And Social Support, Mary Theresa Pagan

Dissertations - ALL

Abstract This study investigates and expands understanding of how care work, widowhood, social support, and physical activity intersect in the lives of older recent widows. The study addresses three primary research questions examining the duration and intensity of care work, pre- and post-death social support, and factors that influenced widows’ physical activity before and after the death of their spouses. Thirty semi-structured, face-to-face interviews conducted with heterosexual widows aged 60 and older residing in Upstate New York who were widowed within 6–24 months prior to interview. Interviews explored care work experiences, social support, widowhood transitions, and both structured and non-structured …


(R2161) Robust Optimization Of Industrial Hazardous Waste Location-Routing Problem Considering Response Actions To Environmental Risk, Sharareh Teimoori, Farhad Hosseinzadeh Lotfi, Seyyed Esmaeil Najafi, Navid Rafiei Jun 2026

(R2161) Robust Optimization Of Industrial Hazardous Waste Location-Routing Problem Considering Response Actions To Environmental Risk, Sharareh Teimoori, Farhad Hosseinzadeh Lotfi, Seyyed Esmaeil Najafi, Navid Rafiei

Applications and Applied Mathematics: An International Journal (AAM)

The management of hazardous industrial waste has emerged as a significant global challenge due to rapid technological advancements. Industrial hazardous waste management systems must be designed not only to be cost-effective but also to minimize environmental risks. This study proposes a mixed-integer programming model for the location-routing of industrial hazardous waste that incorporates both primary and secondary environmental risks, along with suitable response actions. Furthermore, a scenario-based robust optimization model is developed to address uncertainties in the quantities of industrial hazardous waste. A case study is conducted to demonstrate the applicability and comparative performance of the nominal and robust models. …


Quality Improvement Project: Improving Confidence And Clinical Judgment Through Simulation Remediation In Nursing Students, Erica Gillespie Jun 2026

Quality Improvement Project: Improving Confidence And Clinical Judgment Through Simulation Remediation In Nursing Students, Erica Gillespie

Doctor of Nursing Practice Projects

Simulation is a critical component of nursing education, providing students with a safe environment to develop clinical judgment and confidence before entering clinical practice. However, students may experience anxiety and difficulty meeting competency expectations during simulation. This quality improvement project evaluated whether structured simulation remediation improved confidence and clinical judgment among associate degree nursing students. The project was guided by the NLN Jeffries Simulation Framework, and Kotter’s 8-Step Change Model supported implementation. A quantitative, quasi-experimental pre-/post- intervention design was used. Nine nursing students voluntarily participated. During remediation, students reviewed recordings of their initial simulation experiences and completed guided reflection questions …


Cerebrovascular And Bleeding Outcomes Of Warfarin Versus Direct Oral Anticoagulants Therapy For Atrial Fibrillation: A Systematic Review And Meta-Analysis Of Randomized Controlled Trials, Abeer A. Alomairi, Rana Alduhaysh, Alaa Samandar, Abeer Alshehri, Ghada Alabdullah, Saud Almutairi, Faisal Althekair Jun 2026

Cerebrovascular And Bleeding Outcomes Of Warfarin Versus Direct Oral Anticoagulants Therapy For Atrial Fibrillation: A Systematic Review And Meta-Analysis Of Randomized Controlled Trials, Abeer A. Alomairi, Rana Alduhaysh, Alaa Samandar, Abeer Alshehri, Ghada Alabdullah, Saud Almutairi, Faisal Althekair

Neurosciences

Objectives: To compare the effects on cerebral health in atrial fibrillation patients receiving either warfarin or direct oral anticoagulants (DOACs). Atrial fibrillation is linked to a higher likelihood of both stroke and cognitive impairment. While warfarin has historically served as the leading anticoagulant treatment, DOACs are now more frequently viewed as alternatives with an improved safety profile.

Methods: The methodology involved an extensive search of multiple databases, completed up to June 2024. This search yielded randomized controlled trials, which together enrolled over 60,000 participants between the ages of 70 and 84. The DOACs studied were dabigatran, rivaroxaban, apixaban, and edoxaban, …


A Systematic Comparative Review Of Antipsychotic Efficacy And Safety In The Treatment Of Hiccups, Omar Alshargi, Samah Alzaid, Zainab Albahouth, Muradi Hassan Albanji, Hala Makki, Rawan. F. Alboqami, Maram Al Shammari, Huda Alruwaili, Fawaz Alruwaili, Rahmah Ali Algarni, Omar Ibrahim Albahouth Jun 2026

A Systematic Comparative Review Of Antipsychotic Efficacy And Safety In The Treatment Of Hiccups, Omar Alshargi, Samah Alzaid, Zainab Albahouth, Muradi Hassan Albanji, Hala Makki, Rawan. F. Alboqami, Maram Al Shammari, Huda Alruwaili, Fawaz Alruwaili, Rahmah Ali Algarni, Omar Ibrahim Albahouth

Neurosciences

Objective: To evaluate and compare the safety and effectiveness of antipsychotic medications for the treatment of hiccups, thereby guiding clinicians toward evidence-based treatment guidelines. Hiccups are often benign and self-limiting; however, they can become persistent and intractable, adversely affecting the quality of life. Antipsychotics have been identified as a therapeutic option for the management of hiccups; however, the available evidence supporting their safety and efficacy has not been synthesized.

Methods: This review utilized the revised Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The Cochrane Risk of Bias Assessment Tool was modified to evaluate the quality of the …


Subliminal Priming Effects On Motor And Cognitive Performance: Pilot Evidence With Implications For Neurorehabilitation, Rehab E Aljuhni, Ghader A Alqadhi, Saud A Alhassan, Sultan A Alanazi Jun 2026

Subliminal Priming Effects On Motor And Cognitive Performance: Pilot Evidence With Implications For Neurorehabilitation, Rehab E Aljuhni, Ghader A Alqadhi, Saud A Alhassan, Sultan A Alanazi

Neurosciences

Objective: To investigate whether subliminal priming modalities (visual, auditory, or word-based) influence motor and cognitive performance in healthy young adults, and whether these effects vary by gender.

Methods: A total of 30 healthy adults were assigned to visual, auditory, or word-based priming using single-blind, stratified randomization. Subliminal stimuli were presented for 50 ms. Motor outcomes included reaction time on dominant (RT-R) and non-dominant (RT-L) sides, comfortable and maximal walking speeds measured by the 10-Meter Walk Test (10MWT), and functional mobility assessed using the Timed Up and Go (TUG) test. Cognitive performance assessed using the Trail Making Test (TMT). Outcomes were …


Sub-Regional Motor–Somatosensory Connectivity And Lifespan Plasticity In Functional Networks, Adnan A. S. Alahmadi Jun 2026

Sub-Regional Motor–Somatosensory Connectivity And Lifespan Plasticity In Functional Networks, Adnan A. S. Alahmadi

Neurosciences

Objectives: To determine how cytoarchitectonically defined subdivisions of the primary motor cortex, somatosensory cortex, and supplementary motor area (SMA) reorganize their integration with large-scale brain networks during healthy aging. This study investigated the lifespan trajectories of functional connectivity within cytoarchitectonically defined subregions of the primary motor cortex, somatosensory cortex, and supplementary motor area (SMA).

Methods: We conducted a cross-sectional analysis of resting-state fMRI data from 150 healthy individuals (aged 23–80 years), stratified into young, middle-aged, and older groups. Data were sourced from the Southwest University Adult Lifespan Dataset (SALD) and analyzed between June 2024 and June 2025. Using the Jülich …


Relationships Between The Corpus Callosum Index And Current Blood Parameters And Temporal Changes In These Parameters In Patients With Multiple Sclerosis, Oruç Şahin, Muzaffer Güneş Jun 2026

Relationships Between The Corpus Callosum Index And Current Blood Parameters And Temporal Changes In These Parameters In Patients With Multiple Sclerosis, Oruç Şahin, Muzaffer Güneş

Neurosciences

Objectives: This study aimed to investigate changes in blood parameters and examine the relationships among the corpus callosum index (CCI), plaque characteristics, and blood parameters in multiple sclerosis (MS) patients. In MS, the CCI is associated with brain atrophy and disease progression.

Methods: In this retrospective, cross-sectional study, demographic data from 103 MS patients (38 males), along with blood parameters obtained five years earlier and current values, were analyzed in relation to magnetic resonance imaging (MRI) findings. The CCI calculated from MRI scans was assessed in relation to plaque distribution and number. Statistical analyses included paired sample t tests, Wilcoxon …


Clinical Characteristics Of Multiple Sclerosis And Association Of Ms Severity With Vitamin D Level In The Madinah Region Of Saudi Arabia: A Cross-Sectional Study, Majed M. Alluqmani Jun 2026

Clinical Characteristics Of Multiple Sclerosis And Association Of Ms Severity With Vitamin D Level In The Madinah Region Of Saudi Arabia: A Cross-Sectional Study, Majed M. Alluqmani

Neurosciences

Objective: To determine the prevalence of multiple sclerosis (MS) in the western region of Saudi Arabia and correlate it with its predictors among a cohort of patients. The prevalence of MS is increasing in Saudi Arabia, and is attributed to various factors such as recent lifestyle changes, improved disease recognition, and parental consanguinity. Knowing the exact prevalence of the disease may enhance disease management.

Methods: This cross-sectional study was conducted among individuals diagnosed with MS at clinics in the Madinah region.

Results: The study found that the prevalence of multiple sclerosis is lower in the Madinah region. Additionally, …


The Top 50 Cited Articles In Pediatric Neurology: A Bibliometric Analysis, Anas Alyazidi, Osama Muthaffar, Ahmed Bamaga, Hebah Qashqari, Abdulmalek Alhithlool, Ahmad Alanezi, Sameer Almehmadi, Mohamed Babiker, Fahad Bashiri Jun 2026

The Top 50 Cited Articles In Pediatric Neurology: A Bibliometric Analysis, Anas Alyazidi, Osama Muthaffar, Ahmed Bamaga, Hebah Qashqari, Abdulmalek Alhithlool, Ahmad Alanezi, Sameer Almehmadi, Mohamed Babiker, Fahad Bashiri

Neurosciences

Objectives: To identify and analyze the most influential articles within the field of pediatric neurology through a bibliometric lens. As pediatric neurology continues to expand across subspecialties, identifying landmark studies is critical for understanding clinical and research priorities. Bibliometric analysis enables the evaluation of citation trends to highlight impactful contributions that have shaped the field.

Method: A bibliometric analysis of the 50 most-cited pediatric neurology articles was conducted. Articles were assessed by citation metrics, study design, subspecialty, journal impact factor (JIF), and funding status. Correlation and regression analyses evaluated associations between variables.

Results: Citation counts ranged from 185 to 1,440 …


Prevalence Of Depression Among Patients With Epilepsy In Saudi Arabia: A Nationwide Systematic Review And Meta-Analysis, Mothana Y. Al Jabr, Aryam M. Alenizi, Faisal S. Aleisa, Mazen A. Alghamdi, Noura I. Alfehaid, Muteb M. Alqahtani, Abbas S. Almutair Jun 2026

Prevalence Of Depression Among Patients With Epilepsy In Saudi Arabia: A Nationwide Systematic Review And Meta-Analysis, Mothana Y. Al Jabr, Aryam M. Alenizi, Faisal S. Aleisa, Mazen A. Alghamdi, Noura I. Alfehaid, Muteb M. Alqahtani, Abbas S. Almutair

Neurosciences

Objective: To assess the pooled prevalence of depression among epilepsy patients and find the associated demographics and psychosocial factors. Mood disorders are significant comorbidity between patients diagnosed with epilepsy, adversely influencing quality of life and complicating disease management. However, the incidence, prevalence, and associated risk factors of depression in patients diagnosed with epilepsy in Saudi Arabia are not well elucidated.

Methods: This review was employed used studies retrieved from medical databases and the Saudi Digital Library. Observational and cross-sectional studies assessing depression between patients diagnosed with epilepsy in Saudi Arabia were included. Data were analyzed using the Freeman–Tukey double arcsine …


Wearable Sensor Technology And Biomechanical Gait Analysis In Post-Stroke Rehabilitation: A Review With Implications For The Saudi Healthcare System, Abdullah H. Alzahrani Jun 2026

Wearable Sensor Technology And Biomechanical Gait Analysis In Post-Stroke Rehabilitation: A Review With Implications For The Saudi Healthcare System, Abdullah H. Alzahrani

Neurosciences

Stroke remains a major cause of disability worldwide, with gait impairment affecting up to 80% of survivors and contributing to long-term dependence, fall risk, and reduced quality of life. In Saudi Arabia, stroke incidence is rising, with a significant burden on younger populations and disparities in access to post-stroke rehabilitation services. Conventional gait analysis tools rely on expensive, specialized laboratory equipment, which limits their availability in low-resource and rural settings. Recent advances in wearable sensor technologies, including inertial measurement units, pressure insoles, and electromyography systems, offer portable, scalable, and cost-efficient options for assessing gait in real-world environments. These systems can …


Fatigue And Depression In Epilepsy Patients May Not Be Solely Related To The Epilepsy Itself, Sounira Mehri, Josef Finsterer Jun 2026

Fatigue And Depression In Epilepsy Patients May Not Be Solely Related To The Epilepsy Itself, Sounira Mehri, Josef Finsterer

Neurosciences

No abstract provided.


Efficacy And Safety Of Plasma Exchange And Immunoadsorption For Acute Optic Neuritis In Patients With Demyelinating Diseases: A Systematic Review And Meta-Analysis, Mehenaz A Hanbazazh, Mohammed Ridha Algethami, Abdulwahhab Omar Anbarserry, Ruba Mohammed Alghanmi, Lama Nawaf Alanazi, Ahmed Ayed N Alanazi, Bashaier Gubran Alqahtani, Mohammed Abdullah Alamri Jun 2026

Efficacy And Safety Of Plasma Exchange And Immunoadsorption For Acute Optic Neuritis In Patients With Demyelinating Diseases: A Systematic Review And Meta-Analysis, Mehenaz A Hanbazazh, Mohammed Ridha Algethami, Abdulwahhab Omar Anbarserry, Ruba Mohammed Alghanmi, Lama Nawaf Alanazi, Ahmed Ayed N Alanazi, Bashaier Gubran Alqahtani, Mohammed Abdullah Alamri

Neurosciences

Background: Optic neuritis (ON), a common manifestation of demyelinating disorders such as multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD), and myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), often leads to significant visual impairment. Although high-dose corticosteroids are a first-line therapy, many patients experience incomplete recovery. Apheresis therapies, including plasma exchange (PLEX) and immunoadsorption (IA), are being increasingly used as rescue treatments, but their efficacy and safety are debated.

Methods: We conducted a systematic review and meta-analysis of studies evaluating PLEX and IA for acute ON in patients with demyelinating diseases. Four databases were searched up to January 2025. The included …


Investigating The Patent Foramen Ovale–Migraine Link In Southern Saudi Arabia, Al-Amir Bassiouny Mohamed, Maeed Alkathiri, Saad Mushabab Ali Alqahtani, Naif H. Ali, Saima Kashif, Saad A. Alshahrani, Mohammed S. Alqahtani, Mohamed Gaber Mahmoud Gabr, Eltohami Zydan Dafalla, Basharat Hameed Zargar, Wael Qenawi, Ali Mohammed A. Alshehri, Fatimah Asiri, Ahmed Borai Jun 2026

Investigating The Patent Foramen Ovale–Migraine Link In Southern Saudi Arabia, Al-Amir Bassiouny Mohamed, Maeed Alkathiri, Saad Mushabab Ali Alqahtani, Naif H. Ali, Saima Kashif, Saad A. Alshahrani, Mohammed S. Alqahtani, Mohamed Gaber Mahmoud Gabr, Eltohami Zydan Dafalla, Basharat Hameed Zargar, Wael Qenawi, Ali Mohammed A. Alshehri, Fatimah Asiri, Ahmed Borai

Neurosciences

Objective: Migraine is a highly disabling neurological condition, and increasing attention has focused on a possible connection with patent foramen ovale (PFO).

Methods: This single-center observational study enrolled 45 individuals from January to April 2024: 30 migraine patients with PFO (Group 1) and 15 migraine patients without PFO serving as controls (Group 2). All subjects underwent transthoracic echocardiography and completed standardized instruments including the Migraine Disability Assessment (MIDAS), Headache Impact Test (HIT-6), Migraine Symptom Severity Scale (MSSS), Allodynia Symptom Checklist (ASC-12), Visual Aura Rating Scale (VARS), and Migraine Treatment Optimization Questionnaire (mTOQ-6).

Results: The participant's mean age was 37.3 ± …


(R2077) Enhancing Queue Management: Dynamic Server Allocation And Optional Services In Stochastic Modeling, G. Ayyappan, S. Sankeetha Jun 2026

(R2077) Enhancing Queue Management: Dynamic Server Allocation And Optional Services In Stochastic Modeling, G. Ayyappan, S. Sankeetha

Applications and Applied Mathematics: An International Journal (AAM)

Consider a queueing system with a single server, where customer arrivals follow a Markovian arrival process and service times follow a phase-type distribution. The main server has the capability to recruit an additional server when the number of customers in the system exceeds a certain threshold, denoted as L. Both servers provide normal service to customers, and optional service is provided upon request. The main server takes multiple vacations, with the durations following an exponential distribution with rate parameter η, until there is at least one customer in the system. This system can be represented as a Markov chain process, …


(R2142) Queueing System With Batched Services, Server-Controlled Re-Service, Set-Up Time And Multiple Vacation, S. Karpagam, N. Aarthy, B. Somasundaram Jun 2026

(R2142) Queueing System With Batched Services, Server-Controlled Re-Service, Set-Up Time And Multiple Vacation, S. Karpagam, N. Aarthy, B. Somasundaram

Applications and Applied Mathematics: An International Journal (AAM)

To analyze a bulk queueing system with server-controlled admission for reservice, low-batch service, multiple vacation and set-up time. The study explores how the server dynamically adjusts between low-batch and bulk services based on the queue size. After completing a bulk service, the departing batch may request reservice with a certain probability. However, accepting the request is not mandatory, and the server admits it with some probability. Whenever the queue becomes empty, whether after reservicing, completing service with no reservice request, or ending the low-batch service, the server enters a random-length vacation. If the queue still has less than ‘a’ customers …


(R2072) A Method To Sample From Transition Densities Of Diffusion Processes With Unknown Densities, Yasin Kikabi, Juma Kasozi Jun 2026

(R2072) A Method To Sample From Transition Densities Of Diffusion Processes With Unknown Densities, Yasin Kikabi, Juma Kasozi

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, we present a reliable method that can be used to sample paths of a diffusion process described by a system of stochastic differential equations. These are types of processes whose transition density is not known in closed form. This reliable method involves solving a partial differential equation of the Fokker-Planck type by rejection sampling techniques applied to the associated densities. We then use the novel method to sample from the Ornstein-Uhlenbeck (OU) process whose transition density is known and has unbounded drift. The results obtained compare excellently with the analytical results, thus rendering the method reliable and …


(R2174) A Stationary First-Order Autoregressive Process With New Discrete Lindley Marginal Distribution, Tégawendé Martin Kabore, Jean-Etienne Ouindllassida Ouédraogo Jun 2026

(R2174) A Stationary First-Order Autoregressive Process With New Discrete Lindley Marginal Distribution, Tégawendé Martin Kabore, Jean-Etienne Ouindllassida Ouédraogo

Applications and Applied Mathematics: An International Journal (AAM)

This paper introduces a new stationary first-order autoregressive integer-valued process with a marginal distribution following the New Discrete Lindley distribution, referred to as NDLINAR( 1). The process is developed to model over-dispersed count time series exhibiting a mixed behavior arising from the combination of multiple distributions. Its statistical properties are thoroughly investigated, and the parameters are estimated using conditional maximum likelihood. The asymptotic properties of the estimators are also analyzed. The performance of the proposed model is evaluated by comparing it with other existing INAR(1) processes through applications to real datasets. Results demonstrate that the NDL-INAR(1) process effectively captures the …


(R2080) Homomorphism And Anti-Homomorphism Of Interval Valued Neutrosophic Fuzzy Ideals Of Near-Rings, K. Lenin Muthu Kumaran, S. Selvaraj Jun 2026

(R2080) Homomorphism And Anti-Homomorphism Of Interval Valued Neutrosophic Fuzzy Ideals Of Near-Rings, K. Lenin Muthu Kumaran, S. Selvaraj

Applications and Applied Mathematics: An International Journal (AAM)

This paper introduces and elucidates the concepts of homomorphism and anti-homomorphism for interval-valued neutrosophic fuzzy ideals of near-rings. Here we proved if an interval valued neutrosophic fuzzy left ideals of R′ then its inverse image is interval valued neutrosophic fuzzy left ideals of R and converse part is true if the mapping is onto homomorphism. Additionally, we establish the notion of the direct product of n-interval-valued neutrosophic fuzzy ideals within near-rings is also a interval-valued neutrosophic fuzzy ideals of near-rings. To illustrate these concepts, we provide an example showcasing the direct product of interval-valued neutrosophic fuzzy ideals of near-rings.